Sort by
Relevancy

Free Stories

91%
HOW MY AUNT AND SISSY NEPHEW CHANGED MY LIFE FOREVER! (fictional
It was the very first night of my month long North Carolina July summer vacation stay when my Aunt Meg suddenly entered the bedroom that I was temporarily sharing with my younger cousin Rudy. Being so openly effeminine in his body language,voice and looks, I had already planted such dirty thoughts ... Read full Story
CDDIXIE4U 2019-01-08 34,612 Teen (18+) Crossdresser Cumshot Masturbation Bareback Shemale Fucks Guy Fetish Blowjob Big Cock Ladyboy Lingerie domination Homemade Compilation cum in mouth shemale + shemale
100%
Bangkok Night with Thai Ladyboy Dancer
I was visiting Thailand back in the 90s and was blown away by the “Potpourri” of sites, sounds, and smells (not all of them good) of this city. Beautiful women were at every corner and very friendly to foreigners. I went out with a group of guys on the town after dark to check out the go-go bar scen... Read full Story
AllenB 2022-04-20 6,229 Shemale Fucks Guy Asian Guy Fucks Shemale rimming bottom ladyboys cum in mouth top Versatile
100%
The Day I Went SheCock Crazy
I summed up courage to meet up with my old shemale flame Fransicca (she is a Malaysian but living in indonesia) ... messaged her, she sounded excited and asked if i minded her friend joining us. 'Why not' i said. It was settled. we booked a villa for the next day. I checked in early. cleaned up ... Read full Story
Sara Banks 2021-04-26 6,927 Group Sex Cumshot Outdoor Bareback Shemale Fucks Guy Fetish Blowjob blonde Big Cock Asian Ladyboy gangbang
100%
I Give Up
The following story is the first of four parts of a tale that explores the theme of transformation. It is thematically similar others that I have submitted but has a larger narrative arc. I hope you enjoy reading the first portion, Act One & Two. I continue to work on better editing and someone h... Read full Story
ASSEaster5678 2018-09-14 9,464 Cumshot Bareback Shemale Fucks Guy Big Cock Ladyboy
100%
Sissy Femboy Chrissy in Drag at the Club
"Can you wear a dress tonight?" "I can't crossdress in public, I'm not 'out' and don't want to be seen that way." "That's okay. We're going to a gay-only club that has a drag queen show tonight, so you'd fit right in." "Cool, but I'll have to change when we get there." "Awesome! See you tonight!... Read full Story
Chrissy Tunnell 2022-02-03 5,479 Crossdresser Amateur Bareback Shemale Fucks Guy Fetish Blowjob Ladyboy Lingerie domination Guy Fucks Shemale Mature Homemade cum in mouth
80%
One night Transtand ;)
One Night Transtand By BalkanMan990 Published on Lush Stories on 05 Oct 2019 I had no idea she was a trans.. I didn't stop kissing or fondling her when I found out. I went out for a drink at one of the many bars at Croatia,where my girlfriend Sabina and I were staying.Sabina and I had been drin... Read full Story
BalkanLoco91Ri 2019-10-24 9,276 Small Tits Amateur Cumshot Masturbation Creampie Shemale Fucks Guy Blowjob blonde Lingerie Guy Fucks Shemale Homemade pov cum in mouth
100%
Feriengruss 22.07.24
Erneut ging es ins Cruisingworld Kirchberg. Eine herzliche Begrüssung, ab in die Garderobe und dann unter die Dusche. Bereits beim Eintreten hörte ich ein paar bekannte Laute. Als ich beim Zimmer mit der runden Liege vorbei gehen wollte, um an die Bar zu kommen, war kein Durchkommen mehr. Vom Innere... Read full Story
Cheryl_F 2024-09-02 237 Group Sex Cumshot Bareback Creampie Fetish Big Cock gangbang Shemale and Girl Guy Fucks Shemale pov Ass to Mouth cum in mouth shemale fucks female
100%
Philippines Vacation with a Dominant Big Cock Ladyboy
I am still in a state of unbelievable joy that I was lucky enough to experience this but I 100% did and I can’t stop thinking about it as I thought things like this only happen in porn or fantasies. Buckle up because this is a wild one and happened in Manila May 2024. I had the opportunity to vi... Read full Story
AllenB 2024-07-14 6,837 Bareback Creampie Shemale Fucks Guy Big Cock Ladyboy Guy Fucks Shemale cum in mouth domination act filipina ts filipina ladyboy
100%
Bi-Night 18.09.24
Wieder war die Bi-Night im Cruisingworld Volketswil angesagt. Da Fimia und Andrea in Mykonos im Urlaub sind, habe ich mich allein auf den Weg gemacht und bin so gegen 16 Uhr eingetroffen. Eine nette Begrüssung am Clubeingang und schon ging es in die Garderobe. In der Garderobe sprach mich auch glei... Read full Story
Cheryl_F 2024-09-02 328 anal Amateur Creampie Fetish Blowjob Ladyboy gangbang Shemale and Girl sissy pov shemale fucks shemale shemale + shemale shemale fucks female
100%
Florida TG Experience
I had known Jan from High School, we always had an attraction for each other but were dating someone else or married at the time. Jan had actually married a friend of mine and I was envious of course. She at that time had sandy blonde hair, and a body to die for. One evening we had them over for dr... Read full Story
Jon Paul 2018-08-13 11,441 Group Sex Big Tits Bareback Creampie Blowjob blonde Asian Ladyboy Shemale and Girl Guy Fucks Shemale Ass to Mouth cum in mouth double anal
100%
My first TG lover
I first met Holli at the gymnasium of our apartment complex. Since it was around 6:00 am on a Sunday morning, I didn’t expect to see anyone that early. At first just like we all do, the customary good morning, small talk, and it usually stops there, but there was just something that drew my attentio... Read full Story
Jon Paul 2022-07-01 8,081 Amateur Bareback Creampie Shemale Fucks Guy Blowjob Asian Guy Fucks Shemale
60%
Shemale Chrissy Fucked by a Demon
I wanted to write this the night it happened, Halloween, but I was still so traumatized. I was at my fictional fantasy Sugar Daddy's house alone and already spooked out by the noises of this old hundred-year-old wooden house in this loud thunder storm on what some call "Devil's Night." I had to turn... Read full Story
Chrissy Tunnell 2022-12-01 4,404 Small Tits Crossdresser Amateur Bareback Fetish Blowjob Big Cock Ladyboy Lingerie domination Guy Fucks Shemale cum in mouth
100%
2 Faker, Eierlose, Blockierlistenuser und ein paar richtig geile
Freitags sind Fimia und ich an die Bi-Night im CW Volketswil gefahren. Als wir eintrafen, waren schon viele Freund:innen auf der Terrasse anwesend. Wir fläzten uns zu ihnen auf die Liegen und schon bald wurden allerlei Zärtlichkeiten ausgetauscht. Da wurde gefummelt, hier wurde geblasen und sogar da... Read full Story
Cheryl_F 2024-09-02 285 anal Cumshot Outdoor Bareback Creampie Fetish Blowjob Big Cock Lingerie Shemale and Girl shemale fucks shemale cum in mouth shemale fucks female
100%
Dating my Sissy-sister (English)
You are wearing women's stockings and a thigh-high transparent top, the thin shoulder straps of which leave your arms and shoulders elegantly exposed! You're the real lil bunny to me in that girl outfit of yours... How about, should I teach the little one about the naughty girl? You're giggling a... Read full Story
LulaSissy 2024-09-24 2,984 anal Stockings Crossdresser Cumshot Bareback Fetish Big Cock Ladyboy Lingerie femboy shemale fucks shemale cum in mouth shemale fucks female fucking sissy
36%
Nice guys finish last!!!
Wish I didn’t get rejected from so many females in my life and having more as friends!!! It makes me wanting to give up male pieces and wanting to be more female then male. All the time the thoughts flooding my mind about cutting my penis off and starting over!!!... Read full Story
matjohn 2019-08-20 3,767 Crossdresser Big Tits Bareback Creampie Shemale Fucks Guy Fetish threesome Ladyboy redhead shemale + shemale
93%
First Time I tasted Tgirl Sperm
I met a Mexican Trans girl online from Hermosillo and we hit it off and corresponded for a a few months. The vibe was good and ended up deciding that I would help her pay the $140 bucks for her 6-month tourist visa to come up and visit..the process took forever but once she got it, I booked her a pl... Read full Story
AllenB 2022-08-09 9,254 Crossdresser Amateur Cumshot Latina Bareback Creampie Shemale Fucks Guy Fetish Blowjob Interracial Homemade cum in mouth
100%
Hung Trans Lesbians Fuck Two Ladyboys
Note 1: If you like Transsexuals, Trans Lesbians, Asian Ladyboys, Big Cocks, Extreme Cock Sucking, Anal Fucking, Anal Fisting, Semen Swallowing, Role Play, Orgies, BDSM, Cock Sounding and Foot Fetish this story is for you. Note 2: All the characters are over 21. The names are fictitious, but some... Read full Story
darrell 2022-01-03 4,720 Group Sex Big Tits Cumshot Bareback Fetish Blowjob Big Cock Asian Ladyboy Sex Toys Mature cum in mouth shemale + shemale
100%
Slut /W Bad Boy
I was excited as always because I was about to go out in public and hopefully I will meet some horny man with some money and get laid. Now, to make sure that I am a picture of femininity, I double checked my makeup in several mirrors from many angles. My lips were perfect and I made sure my cheeks b... Read full Story
Regina10 2020-12-04 7,359 Stockings Crossdresser Big Tits Cumshot Bareback Fetish Blowjob Big Cock Lingerie Guy Fucks Shemale pov Ass to Mouth
50%
Lady Regina
I know that many say that I I’m a coward because I am comfortable living in the closet as a part time female and not expressing my special female side completely. My friends all tell me to go out and have fun and not worry about what people say or think. In spite of that, and because of the prudish... Read full Story
Regina10 2022-07-01 5,378 Crossdresser Big Tits Masturbation Bareback Fetish Blowjob Ladyboy gangbang Lingerie Guy Fucks Shemale Mature pov
85%
My Awkward Phase
My Awkward Phase ©Alexandra Rios 2019 The greatest lie is that what happens in high school doesn't matter, because life begins in college. I pretended to agree, although I never believed it, for I was the world's greatest liar. Wannabees I was hanging out with my friends Quinn, Barb and Anne ... Read full Story
the greatest liar 2019-06-14 12,271 Small Tits anal sex Latina Masturbation Bareback Creampie Blowjob Big Cock transformation gangbang Shemale and Girl Guy Fucks Shemale Sex Toys Ass to Mouth cosplay hormones high school real life situations
93%
Virgin Slut Cravings.
There have been so many times that I have had to hide how I felt because I lived my life denying who I was. I was a closet queen who was pretending to be normal. Some might have guessed my secret if they were observant. I didn't do things that other boys my age did. I love hanging out at home like a... Read full Story
Regina10 2020-09-29 8,934 Stockings Crossdresser Big Tits Cumshot Bareback Creampie Blowjob blonde Big Cock Lingerie Guy Fucks Shemale pov
100%
Cheating Sissy Wife chapter2
My sweetheart Keith is back from his road trip and we were about to make up for lost time. He didn’t even want me to fix dinner. Instead he said that we would order pizza later. Meanwhile we started making out right there on the couch. We were both horny and anxious to get next to each other. I felt... Read full Story
Regina10 2020-10-26 5,091 Crossdresser Big Tits Cumshot Bareback Creampie Blowjob Big Cock Ladyboy Lingerie Guy Fucks Shemale pov Ass to Mouth
100%
A Perfect Pandemic: A Transsexual Transition in a Troubled Time
A Perfect Pandemic A Transsexual Transition in a Troubled Time A Novelette by Alexandra Rios Text Copyright Reserved © August, 2021 Dedication Transgender Day of Remembrance is a solemn occasion. I am offering “A Perfect Pandemic” for free as an antidote to the fear, phobia, discrimination, d... Read full Story
the greatest liar 2021-11-16 6,413 Teen (18+) Crossdresser Group Sex Big Tits Bareback Creampie Big Cock gangbang domination Guy Fucks Shemale Interracial double anal webcams
80%
A Fairy Tale Part 1
=-=-Chapter One-=-= "Heather?" My boyfriend was knocking on the bathroom door. "What's wrong, are you okay? Heather?" "Yeah..." I swallowed thickly and that was a mistake. I threw up some more, kneeling on the floor, feeling like I was dying. "Heather?&q... Read full Story
shemale lover 2011-12-06 11,852 Bareback cum ass fucking slave
100%
Regina" s Love session
As Tommy entered the apartment, I couldn’t help but notice that his cock was suddenly excited and outstanding tonight and I knew the reason. I smiled to myself with confidence because my l attire was getting the job done. I was wearing my shocking pink sheer lingerie with the frilly top that accen... Read full Story
Regina10 2022-04-01 2,662 Stockings Big Tits Cumshot Bareback Creampie Blowjob Big Cock Lingerie Guy Fucks Shemale pov Ass to Mouth cum in mouth
66%
intimate Cousins
My favorite cousin and first lover, Billy, was just released from prison and I was anxious to see him. I am ecstatic that he is out, and I am thinking about all the past fun we had as I prepare to revisit those good times. Tommy knows all about my relationship with Billy and he understands my need t... Read full Story
Regina10 2022-05-13 6,385 Stockings Crossdresser Cumshot Masturbation Bareback Blowjob Big Cock Ladyboy Guy Fucks Shemale Ass to Mouth cum in mouth double anal
50%
Transvestite father异装癖的父亲和儿子被农民工虐待
'migrant worker S, good at foul language and humiliation, SP, heavy hands, is it acceptable?' On the SM dating software, a message popped up. Migrant worker S. What the hell? I casually click on his information, 39Get 186 and 76, dynamic is full of handsome muscles, muddy shoes, a glimpse of gar... Read full Story
Oldslut Sissy 2024-08-21 2,179 Amateur Big Cock Asian Sex Toys Mature sissy chinese
90%
Sissy Slut and Stepdads
Frank was pumping me hard and his huge cock seemed to have grown and become extra hard. I am so thrilled that way he enjoys fucking my ass with such passion. I would almost think he was in love with me if this relationship wasn't so bizarrey. It’s ironic that as a male I always get total humiliation... Read full Story
Regina10 2020-11-30 9,587 Crossdresser Bareback Creampie Fetish Blowjob blonde Big Cock Ladyboy Lingerie Guy Fucks Shemale Ass to Mouth double anal
88%
Best booty i ever had
there is a certain part of the big city where the community partys everyday of the week called boys town i worked in the area and never knew but what i did know is i had a fetish for an extremly large ass i love big bootys and desired a tranny after watching shemale videos this didnt happen until i ... Read full Story
jrryder 2013-12-08 4,718 tranny Bareback Blowjob Ebony doggy style Guy Fucks Shemale
100%
Regina’s Double threat.
Hello guys, I recently ran into a former hater who was no longer the hater I had met years earlier. In fact, he had only treated me so horribly because of his own inner dark desires. When we met a few years ago at one of the clubs, he had been very abusive to me. He went out of his way to say hurtfu... Read full Story
Regina10 2022-02-08 3,324 Big Tits Cumshot Bareback Creampie Fetish Blowjob blonde Big Cock redhead Guy Fucks Shemale Ass to Mouth double anal
100%
Santa & Mrs. Claus
In my story called "Santa Likes Fembois" here I explained that I discovered that last Christmas when Santa Claus visited my house then made me suck on his cock before fucking my boypussy. He also gave me an actual present: a winning lottery ticket. Well, with that multi-million dollar winning ticket... Read full Story
Chrissy Tunnell 2022-12-01 3,911 Crossdresser Amateur Bareback Fetish Blowjob Ladyboy Lingerie domination Guy Fucks Shemale Mature cum in mouth
100%
Gemini Sluts and Gang
My good friend Renee and I had set up a double date gang bang for tonight now that she was finally out of the closet and ready. She has decided that life is too short to remain in the closet and miss out on all the fun. Renee and I have so much in common. Besides loving sex, we both have a fetish f... Read full Story
Regina10 2021-04-09 4,743 Group Sex Big Tits Cumshot Bareback Fetish Blowjob blonde gangbang Lingerie Guy Fucks Shemale Ass to Mouth cum in mouth
100%
Sissy Femboy Chrissy in Drag 2: At the Apartment
This is Part 2 to the article I wrote called "Sissy Femboy Chrissy in Drag at the Club." In that story I explained how I am 41 but look, feel and sound younger, that I shave myself smooth and like dressing in gurly panties and other female clothes to be a sissy femboy for older guys. A guy I met on ... Read full Story
Chrissy Tunnell 2022-02-03 3,969 Crossdresser Amateur Bareback Creampie Fetish Blowjob Ladyboy Lingerie domination Guy Fucks Shemale Mature
100%
Regina and Tommy
I was getting fucked hard and aggressively by a certified bad boy named Tommy. I've never been the kind of girl who liked bad boys until I met Tommy. Tommy like doing all kinds of wild crazy things to me and I was under a spell and couldn’t object. Tommy was like the asspussy whisperer and he gave m... Read full Story
Regina10 2022-03-02 3,260 Stockings Big Tits Cumshot Bareback Creampie Fetish Blowjob Big Cock Ladyboy Lingerie Guy Fucks Shemale Ass to Mouth
50%
I and the old man's story 后面中文
I am from Chongqing, a boy who loves his father. When I was young, my neighbor aunt always said I looked like my sister, like a beautiful girl. At that time, my family was relatively poor. My Sister, my parents, and my family of four lived in public rental housing of less than 30 square meters. Star... Read full Story
Oldslut Sissy 2024-04-15 9,575 Crossdresser Amateur Masturbation Asian Ladyboy Guy Fucks Shemale Mature small cock Homemade sissy chinese teen (18+)
100%
Sissie Slut's Windows of Womanhood
I flash back to my first time with a grownup adult at the tender age of16 . I was so nervous now that we were here in the motel room. I was nervous for so many reasons. I lied to my family and told them I was staying at a friend’s house. Instead, I'm here with Mr. Joey in a motel room and he was my... Read full Story
Regina10 2021-02-22 6,938 Crossdresser Bareback Creampie Fetish Blowjob blonde Ladyboy Lingerie Guy Fucks Shemale Ass to Mouth cum in mouth double anal
100%
He Could Have R*ped Me!
This guy was so big, taller than me and I'm 6 feet, and bigger, not fat, just right for his big size, and I am so skinny, except for my tummy, that he could have pinned me down and forced himself onto and into me against my will, and no matter how much I'd struggle with him and fight back, he could ... Read full Story
Chrissy Tunnell 2022-02-02 3,082 Crossdresser Amateur Bareback Fetish Blowjob Ladyboy domination Guy Fucks Shemale Homemade cum in mouth
100%
Regina's scary, and sexy Blind Date
I had just finished doing my makeup, finally deciding which blush to use, and I thought I had some time for my meditation. However, Mr. Cobb was early. The gold minidress I wore showed enough legs, ass and tits to make any man horny, and the strappy tanned five-inch sandals, made me feel majestic ... Read full Story
Regina10 2024-03-18 5,059 anal Crossdresser Bareback Creampie Fetish Blowjob Ebony Guy Fucks Shemale big ass sissy Ass to Mouth cum in mouth
100%
My Noisy Upstairs Neighbors
So... I just moved into my new apartment a few weeks ago, and ever since then all day every day I have been hearing loud noises from my upstairs neighbors. Not just normal walking-around noise, but loud and heavy bangs, crashes, and poundings against the floor, my ceiling. Not only was the sound ann... Read full Story
Chrissy Tunnell 2024-07-15 4,207 Crossdresser Bareback Fetish Blowjob Ladyboy gangbang domination Guy Fucks Shemale sissy double anal
100%
Lady In The House Ch. 03
A story by MicheleNylons ( Michele continues to be used by the inmates of a prison. Hot wet fluid suddenly soaked the tops of my thighs and the crotch of my panties. I felt stream after stream of his creamy seed shoot against my silken hosed thighs and being to slowly run down my legs. My crot... Read full Story
✘Transensual✘ 2019-01-11 6,594 Stockings Crossdresser Bareback Creampie Fetish Blowjob Big Cock Lingerie domination Guy Fucks Shemale PRISON PRISON PUNK prison sex Prison Bitch
85%
Loving Strangers
In the past I had never failed to disclose my sexuality to a new male prospect. I looked good in my tight dress that showcased my woman's ass, and the spike heels that made me look so fuckable. I knew from past experience that guys could get really pissed and violent when they found out you weren't... Read full Story
Regina10 2020-06-23 4,882 Cumshot Bareback Fetish Blowjob Big Cock Guy Fucks Shemale Ass to Mouth
100%
Sissy Slut Reunion
Rob had moved back to town and called me. He had just moved into his new place and he wanted me to come by and talk. I knew what he really wanted from the tone of his voice, because I wanted it too. He said he had been thinking and dreamed about me the whole time he was away. My spirits lifted and ... Read full Story
Regina10 2020-09-14 4,471 Crossdresser Big Tits Cumshot Bareback Creampie Fetish Big Cock Ebony Ladyboy Guy Fucks Shemale Ass to Mouth cum in mouth
94%
Sissy Slut: Gang Favored
I confess I am a nymphomaniac shemale slut who loves being the object of a man’s desires. That's why I was out here with these hookers trying to hook up with somebody to have sex. I'm either having sex or I'm thinking about having sex most of the time I like being a honey. I love having sex with men... Read full Story
Regina10 2021-03-02 7,838 Stockings Big Tits Cumshot Bareback Fetish Blowjob Big Cock Ladyboy gangbang Guy Fucks Shemale cum in mouth double anal
100%
Horny Writing A Strange Habit
I enjoy watching videos which I can Vicariously live. This is nothing more than my horny hobby, an amalgamation of various thoughts. My form of hands free edging. Spell checked only, "No I haven't proof read a first draft, not trying to publish masterful works here." Hope to hear from those w... Read full Story
Araina 2021-03-08 2,973 Crossdresser Amateur Big Tits Cumshot Bareback Fetish Blowjob Big Cock Guy Fucks Shemale Frottage Homemade Ass to Mouth cum in mouth
100%
Erotic Dreams come true.
You start having intense erotic dreams — and the faces you see is one you don’t recognize but that feels familiar. Mandy was that girl that Chad had been dreaming of, the kind where to see her made a rush go through you like a hot flash. Chad had just broken off a relationship, and his sister war... Read full Story
Jon Paul 2023-05-26 5,152 anal Stockings Big Tits Cumshot Bareback Fetish Blowjob Guy Fucks Shemale small cock
40%
Dating all whole my life
Julia and Ilya, together 10 years It was more than 10 years and 2 children ago. In December 2005, we agreed to meet at the gate of my office after a working day. I did not go out godlessly for a long time (40 minutes from the appointed time), but he still waited. I hope he does not regret it ... Read full Story
PornoDating 2019-08-15 4,289 Crossdresser Amateur Big Tits Cumshot Bareback Creampie Fetish Blowjob blonde Big Cock Asian gangbang domination Guy Fucks Shemale Interracial sex Mature Futanari Frottage Compilation Ass to Mouth Cartoon cum in mouth double anal dating life in Mars? life
80%
Getting Fucked by Sasquatch
Bill was about to show up, I had known him from a chat room for years now. I was in his town for work and we had set up this date so we could finally meet each other. I heard a hard knock at the door and when I swung it open, I just stood there in awe. It wasn’t the big beard or really long hair tha... Read full Story
pennypenny 2020-08-21 6,260 Crossdresser Bareback Creampie Fetish Blowjob Big Cock redhead domination Guy Fucks Shemale pov Ass to Mouth cum in mouth
100%
Feriengruss 16.07.24
Heute habe ich endlich jemanden gefunden, der mir einen langersehnten Wunsch erfüllen wollte. Ich wollte, nackig unter dem Mantel und nur bekleidet mit eingeschnürten Titten, durch die Stadt geführt werden, während ich gefilmt wurde. Wir machten ab, als es in Weinfelden gerade einzudunkeln begann. B... Read full Story
Cheryl_F 2024-09-03 422 anal Amateur Cumshot Outdoor Bareback Fetish blonde Big Cock Ladyboy domination Guy Fucks Shemale Homemade pov
75%
Blue collar Master, white collar slave Part 2
About an hour later I was once again naked except for my chastity pouch and my stilettos and once again I was screaming and crying, my body covered with angry red welts from Master Darren's whip. On my knees crying and begging I held his cock in my hands, trying to give the best handjob ... Read full Story
shemale lover 2012-01-13 11,676 torture extreme fiction bondage and discipline
71%
Glory Hole Girlfriend
My boyfriend likes to take me to the local adult bookstore, into the back where the video arcade is. There's always a lot of men there, strangers that we don't know, and I feel funny when they look at me. They wonder why a pretty young woman would be back there. It smells too. A rich sweaty sc... Read full Story
shemale lover 2011-12-18 7,585 Creampie ass fucking mouth fuck