Sort by
Relevancy

Free Stories

100%
HOW ONE PEEPING TOM MORNING TURNED ME INTO A SHEMALE SISSY BITCH
It was while cutting across his back trailer park lawn around 7pm on misty July Saturday evening, when I first discovered that Mr. Parker was really a fag. How else could you describe a man wearing a long blonde wig on his head while below he wore only a large somehow stuffed pink lacey woman's bra ... Read full Story
CDDIXIE4U 2019-01-08 14,105 Teen (18+) Crossdresser Amateur Cumshot Masturbation Blowjob Big Cock Ladyboy Lingerie domination Guy Fucks Shemale Homemade Compilation Vintage cum in mouth
86%
The Girl Next Door Ch. 01 by derezzed ©
Michael was your average 21-year-old college student. He was on his way home from college for summer break after finishing his finals and looking forward to a few months of relaxation. Driving home Michael reflected on his past three years of college. It had been a great junior year. He met a lot of... Read full Story
StevelovesTgirls 2019-05-27 18,188 Amateur threesome Big Cock shemale + shemale
100%
About Jack and Diane
Thanksgiving was over the college kids are returning to school and Las Vegas has slowed down from the busy restaurants and overcrowded casinos. It’s the best time of year to see a nice show for less. Jack’s friends had all taken off with families and he had time to think about how lonely he really w... Read full Story
Jon Paul 2023-12-20 7,050 anal Cumshot Bareback Fetish threesome Lingerie Guy Fucks Shemale small cock shemale fucks shemale cum in mouth shemale + shemale
100%
The Big Tiddy Goth Girl
Hannah and I went to the pool in my apartment complex. This was my first time dressed as female in public and I was loving my new, feminine tan lines. To keep a long story short, while tanning we were perv'd on and approached by a guy calling himself Mark. He was desperate for our attention and fumb... Read full Story
KaceyKlarissa 2024-02-23 5,003 Crossdresser Big Tits Cumshot Masturbation threesome Big Cock Shemale and Girl small cock big ass sissy femboy cum on tits goth
100%
The Girl Next Door Ch. 03 by derezzed ©
Chapter 3 – The Night Out Michael woke up on Monday morning feeling quite relaxed. The sun filtered in through the blinds towards him. He felt warm from the gentle rays. As Michael became more alert, he examined his surroundings. The feeling of silk sheets wrapped around him and Alexis's arm casu... Read full Story
StevelovesTgirls 2019-06-11 18,728 Amateur Shemale Fucks Guy Fetish threesome Blowjob domination Guy Fucks Shemale Ass to Mouth shemale + shemale
94%
The Girl Next Door Ch. 01
derezzed Michael was your average 21-year-old college student. He was on his way home from college for summer break after finishing his finals and looking forward to a few months of relaxation. Driving home Michael reflected on his past three years of college. It had been a great junior year. H... Read full Story
Gwapo67 2022-05-13 6,877 Bareback Creampie Big Cock shemale + shemale
54%
hi is me
im happy later of much time im a verified model , because other person have much videos of me and is not good look your videos in other page is not your .... thanks shemale for give me the chance to be verified love you... Read full Story
Kimberly Polizzi 2019-08-21 3,615 Amateur Latina Big Cock Shemale and Girl Compilation webcams
45%
Threesome with random muslim men from Dubai -
As you all know, most of the meetings with my clients happen in good 3-star or 4-star hotels. Clients normally visit my hotel room and have fun. This exciting session happened during my stay in a 3-star hotel room in Bangalore on March 1st and 2nd. I had bookings for both the days and was prepare... Read full Story
Manusha Tranny 2021-10-14 9,128 Crossdresser Cumshot Outdoor threesome Blowjob Big Cock Asian Ladyboy gangbang domination Guy Fucks Shemale Ass to Mouth cum in mouth
100%
Threesome goes clubbing
Ft. Lauderdale is probably the most LGBT friendly city on the east coast. So many nice restaurants and clubs that welcome all and have many LGBT employees as well. Lydia and I have been married several months, we had met Joanne an absolute amazing transgender girl during a weekend trip to the Baha... Read full Story
Jon Paul 2021-07-08 5,349 Big Tits Cumshot Bareback Creampie threesome Guy Fucks Shemale cum in mouth
100%
Jo, Shemale Goddess! Part 1
Jo plumped the cushion and carefully positioned it until it was precisely at the right angle. Nothing less than perfection would do. Ricki, her friend of twelve years was coming to stay overnight and she would notice if the tiniest thing was out of place. An impatient knock on the door signalled ... Read full Story
shemale lover 2011-09-04 5,568 anal sex sucking shemale
85%
BANGING AROUND BANGKOK
BANGING AROUND BANGKOK: THE AMOROUS ADVENTURES OF CAITLIN "MEOW" MORRISON after living and working in Thailand/SE Asia for many years i decided to write an erotic story based on some of the people i have known, venues and places i have been, and the P4P night-scene where i spent way too much... Read full Story
bkkldby 2019-06-17 14,256 first time Teen (18+) Amateur Group Sex Big Tits Cumshot Outdoor Bareback Blowjob Big Cock Asian lesbian public place
100%
Surprise Ending (Part One)
My wife is the picture of professionalism from 8 to 5, but after hours she is a sexual dynamo who loves men and women. Throughout our relationship she has introduced several of her gal pals into our bedroom, hot tub, shower, etc...you get the idea. Anyway, two weeks ago she let me know that one o... Read full Story
Chantel13 2022-08-23 5,577 Crossdresser Amateur Group Sex Outdoor Bareback Shemale Fucks Guy threesome Big Cock Shemale and Girl Guy Fucks Shemale Ass to Mouth cum in mouth
100%
2nd date with Latina Sissy Destiny
So this was my second time with Destiny, a really cool Latina CD/Sissy who had just turned 22. You might want to read my first goaround with her title, “Deflowering Latina Sissy Destiny” as it will give background and context here. After our first encounter, she signaled that she was definitely... Read full Story
AllenB 2022-04-05 4,221 Crossdresser Cumshot Latina Creampie Shemale Fucks Guy Blowjob Interracial cd Homemade sissy cum in mouth cum swallow amatuer cd
83%
Fun with a latina tranny
So I'm a big fan of a big tranny cock in my ass. Just throwing that out there early on here. So this past summer I decided that with my school being off I should get some tranny cock as fast as I could. I went on a site and set up a new account, hoping for the same luck I had a few months ago wit... Read full Story
shemale lover 2012-09-15 3,740 anal Latina cum oral Sex Toys strapon
81%
Ladyboy Switch Story
I am messed up with how I feel about this. I still love looking at women. I love tits and arse. I like the soft feel of women – kissing them and feeling their bodies. I don’t look at men in public and get turned on – men with clothes on do nothing for me. Put me somewhere that I can see those same m... Read full Story
shemale lover 2015-02-27 7,140 Cumshot suck Shemale Fucks Guy Ladyboy ass fucking swallowing
83%
Wife Left Me so I Could be a Girl
I Am The Girl My Wife Did Not Want As the only child of a single mother I grew up around all things feminine. Having lingerie and stockings drying in the bathroom was normal for me and I always loved how pretty the full cut nylon panties and slips with tons of lace looked. I lived at home with... Read full Story
ASSEaster5678 2018-07-09 10,560 Shemale Fucks Guy Ladyboy Mature
100%
Surprise Ending (Part Three)
I rolled my dick around her hole to spread the precum off it and lubricate it. The feeling was sensational and I couldn't spend much time easing my way in --I shoved right in the the hilt in one steady push. Karla practically jumped off the couch and screamed. I thought maybe I had hurt her (I am... Read full Story
Chantel13 2022-08-23 4,439 Crossdresser Amateur Group Sex Cumshot Outdoor Creampie Shemale Fucks Guy Big Cock Shemale and Girl redhead Guy Fucks Shemale Ass to Mouth
100%
His Perfect Shemale Partner Part 2
Quite a few things have changed since the last chapter. OK maybe not that many, I am still lusting after Sally's body needing to have my dick in her and feel her in me, but we are a lot closer now as we are living together. Sally has gone to her 1st choice University and I decided I would rather get... Read full Story
shemale lover 2011-08-28 4,926 Blowjob shemale cum
25%
Fantastic threesome w/ Miranda Pinocchio & Danielle Albuquerque
Today taken by the craving for something really big I call Miranda who answers me immediately and despite the language barriers and her way of speaking not always understandable we agree for 70 and a quiet thing. I sling in Naples, central area, the usual low in the alleys between via Marina and the... Read full Story
RonWisley 2020-05-04 4,774 Amateur Cumshot Shemale Fucks Guy threesome Blowjob Big Cock
85%
Shemale Public Bondage Fantasy
It was a chilly evening, I had arranged to meet him in the city centre. I was wearing a rather skimpy black dress, black lingerie and red high heels. It was my first time dressed in public like this. He was an average looking man, he shook my hand and kissed my cheek, and asked if I was ready. I aff... Read full Story
shemale lover 2013-06-22 4,962 Cumshot Outdoor shemale Lingerie ass fucking domination public
88%
Shemale Ride Along Part 2
Note: This is a sequel to my previous story, "Riding in Cars with Shemales." If you would like some back story into how Terra and Matt met, please read it. If not, you can probably still enjoy this one by itself. * It was a wonderful day in May. The sun was shining. The sky was clea... Read full Story
qtball 2016-08-31 11,655 Outdoor Big Cock bj Shemale on Guy self fuck
80%
Transsexual Savage
John had walked for eleven days. He was headed towards Fort Winston at the Hiat River, and he still had about three days ahead of him. The Hiat River was the natural border that separated the civilized world, where he came from, and the savage and brutal wilderness, where the natives lived and pract... Read full Story
Anal Orgasm 2020-07-10 6,370 Big Tits Outdoor Masturbation Bareback Creampie Shemale Fucks Guy Blowjob Guy Fucks Shemale
100%
Deflowering Latina Sissy Destiny
A real life story of my one and only time deflowering someone and being their first real encounter, I was 27 at the time and she was 21. I am absolutely convinced that Trans girls and CDs have a bit of a 6th sense when it comes to perceiving which guys are into them even in a public situation. I ... Read full Story
AllenB 2022-09-07 6,483 first time Big Cock Guy Fucks Shemale Homemade sissy travesti cum in mouth
100%
The Three of Us
Imagine you are a lonely person on the inside, and just wanting all your life to be loved for who you are. Holli Artigas, was just that person. Wondering whether her obsession with Jon Silva, a football star, was from a casual encounter, or was she truly fond of him? Growing up in the Sao Paulo, ... Read full Story
Jon Paul 2024-04-28 3,483 anal Creampie Shemale Fucks Guy threesome Shemale and Girl cum in mouth double anal shemale fucks female
50%
A Revenge Fuck
It had been a long day. I had fought the traffic after a miserable week to get home early and surprise my wife for what was to be a romantic weekend. But as I pulled up to the house my heart sank. I saw a bright red motorcycle in the drive way and something inside told me, "This isn't right!&qu... Read full Story
shemale lover 2012-06-03 11,277 shemale oral sex Interracial
100%
College project surprise
So this story happened while I was still in college and remains without doubt, the craziest, most exciting experience of my life. So I the story begins one day when I walking to class. I went to a big university so my walk was quite long, and the first 1/3 was just through off our campus housin... Read full Story
Jsmithsub 2020-09-16 21,262 Group Sex Bareback Shemale Fucks Guy Fetish threesome Big Cock Ebony domination Ass to Mouth cum in mouth
80%
Buffy the Shemale Vampire Slayer Part 14
"Let's get this over with," Buffy suggested. "The sooner we start, the sooner I kick your demon ass." Baphomet smiled. "You will fuck the witch," he said, "while I fuck you." Buffy shook her head. "Willow's my best friend. I can't-" "Th... Read full Story
shemale lover 2011-08-23 5,165 anal sex asshole Big Cock
91%
The Girl Next Door Ch. 03
derezzed Chapter 3 – The Night Out Michael woke up on Monday morning feeling quite relaxed. The sun filtered in through the blinds towards him. He felt warm from the gentle rays. As Michael became more alert, he examined his surroundings. The feeling of silk sheets wrapped around him and Ale... Read full Story
Gwapo67 2022-05-13 6,122 Bareback Creampie Shemale Fucks Guy threesome Blowjob cum in mouth
100%
Couple and a Tranny
There is a saying that a single man looking for companionship and good fortune will seek someone for marriage. Lydia and I met several months ago on an online dating site. We agreed to meet at a bar restaurant for drinks and initial meeting. She was at the bar wearing a yellow sundress, white painte... Read full Story
Jon Paul 2022-09-20 5,448 Cumshot Outdoor Latina Bareback threesome Ladyboy Shemale and Girl Guy Fucks Shemale Ass to Mouth double anal
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 33 anal Cumshot Outdoor Bareback Creampie Fetish Blowjob Big Cock Lingerie Shemale and Girl shemale fucks shemale cum in mouth shemale fucks female
100%
The game show,
One day i was looking through a number of competitions and trying to find a way to make some easy quick money. A number of applications were sent, mostly for junk i didn't need or for competitions I knew I had no chance of winning. For example, the types you get $30,000 for answering the easiest que... Read full Story
chris1989r 2022-01-24 4,857 Bareback Shemale Fucks Guy Ebony gangbang Guy Fucks Shemale shemale + shemale
100%
Shawshan part2
The summer weather has finally let up and cool evenings where you need a sweater are among my favorite times of the year. Charlene left now from prison and served her time for drug possession. We had become close friends as well as cellmates over the last few months. She no longer cuts her hair as ... Read full Story
Jon Paul 2021-05-20 3,369 Latina Masturbation Bareback Shemale Fucks Guy threesome Guy Fucks Shemale shemale + shemale
80%
TG Girlfriend moves in (part 2)
My wife Lydia and I have been married about 9 months, we have a very close TG friend, Joanne, that lives next door and every once in a while, we get together, and all go out and enjoy. We have had sex together, and when Lydia is away Joanne, and I are together at every opportunity. Joanne and I work... Read full Story
Jon Paul 2022-01-21 3,549 Big Tits Cumshot Bareback Creampie threesome Blowjob Shemale and Girl Guy Fucks Shemale
100%
My 1st Time was Not the Only Time.
One late night after hitting the slopes and partying I left my friends birthday party feeling extra horny. It was about 6 or 7 in the morning now and after having no luck finding an escort I responded to an ad on craigslist posted by a trans woman. I figured two things, this dick isn't going to suck... Read full Story
LesFuax 2019-02-16 9,225 first time Small Tits Amateur Latina Bareback Creampie threesome Blowjob Big Cock ass fucking barebacking barebackedshemales first time with a tranny raw anal raw dick raw fucking firsttime
100%
My new Life with Pat. Part 2
While Jean was discussing with the lady from the next table i feel the didlo starting to vibrate and then something like a small ball move up and down into the didlo, it was a prostate massage. I saw Jean playing with a remote control, He increased and deacresed the frequency of vibration and the ... Read full Story
jperrot 2022-08-09 5,071 Amateur Bareback Shemale Fucks Guy threesome Shemale and Girl domination Guy Fucks Shemale slave Ass to Mouth double anal webcams punishment
100%
Lola Chapter 5
Lola chapter 5 Summer vacation was coming to an end. Most of the time we had been to ourselves, mostly at home but also a couple of shorter trips. Beer tasting in Stockholm's archipelago, a trip to the west coast, overnight stays in hotels, everywhere we were received like any other couple. A fam... Read full Story
BellaBeau 2023-10-30 5,882 anal Cumshot Latina Bareback Creampie threesome Shemale and Girl Lola
100%
Camming Down the Rabbit Hole Ch. 12
We woke up many hours later, still intertwined, my morning wood throbbing as Ellie slid inside my panties and wrapped her hand around it. This was a much better way to wake up than usual, and we proceeded to have a really relaxed slow fuck. She reached a much more low key orgasm but I knew I wouldn’... Read full Story
Dani_does_Dallas 2022-05-09 5,432 Crossdresser solo Amateur Cumshot Outdoor Masturbation Blowjob Shemale and Girl Sex Toys self sucking pov cum in mouth webcams
94%
Different 3some in Acapulco
My job in a large travel agency takes me every march to Acapulco for the Tianguis Turistico, (Mexico tourist fair) that takes place in this nice resort. I very much enjoy those trips, and especially the pole dancing bars, were I would hang out at least 2 or 3 times during my stay. Those places ar... Read full Story
shemale lover 2013-07-22 6,386 anal sex Latina threesome oral sex handjob
80%
How it started
What got me started off watching shemale porn was actually meeting a very beautiful shemale at a beach party. I already knew she was a guy but she was so beautiful. So at one point I asked her if she wanted to go for a walk and after a few minutes and let her know that I was down. Her response was ... Read full Story
PNPFUCKBOY 2019-02-12 12,035 Teen (18+) Small Tits Crossdresser Amateur Big Tits Outdoor Latina Bareback blonde Big Cock Ladyboy domination Guy Fucks Shemale Interracial Sex Toys Mature Homemade Ass to Mouth
88%
My wonderful life with Pat : Domi and Morgan
second part of the tattoo ..... I was nervous to be tied and at her mercy.Morgan put on a mask to make me blind and she tightened the ties to keep me from moving. Then with a very soft voice Morgan sussed me, don’t be afraid, i will make this day an unforgettable one. You will have a such intens... Read full Story
jperrot 2021-04-09 3,259 Amateur Outdoor Masturbation Bareback Shemale Fucks Guy threesome Blowjob domination Ass to Mouth cum in mouth
100%
Vegas Honeymoon to Remember
I had dated my wife (Carmen) for about 6 months before we decided to Marry. One evening we were soaking in the Jacuzzi together and drinking wine. She always wants to try different things, which makes our sex life wonderful. Carmen asked me if I ever had any fantasies. I said I guess like most me... Read full Story
Jon Paul 2018-05-30 20,533 Group Sex Cumshot Bareback threesome Ladyboy Shemale and Girl
100%
My Wife's Fantasy
I am originally from Brazil but moved to the USA when I was an infant with my parents when my father was transferred with his job. I married a Latina girl from Texas just a few months ago. Lydia has always been a sexual partner that enjoys different things. After a while as everyone usually does we ... Read full Story
Jon Paul 2021-06-28 11,300 Bareback Creampie threesome Blowjob Shemale and Girl
100%
Being taught a lesson .......... I think!
How did I end up on my back in my own bed, legs straight up with my ankles over her shoulders, ready to have my ass fucked from a lost bet? A bet that Alma clearly cheated at as we discover. I was off to Thailand for a 16 week course in Thai massage at a school recommended highly by a friend I ha... Read full Story
Curious_billy 2023-11-12 8,441 anal Amateur Group Sex Bareback Creampie Shemale Fucks Guy threesome Big Cock domination Homemade Vintage cum in mouth
100%
Different 3some in Acapulco
My job in a large travel agency takes me every march to Acapulco for the Tianguis Turistico, (Mexico tourist fair) that takes place in this nice resort. I very much enjoy those trips, and especially the pole dancing bars, were I would hang out at least 2 or 3 times during my stay. Those places ar... Read full Story
shemale lover 2012-08-23 3,520 first time threesome Blowjob fingering
89%
Fem Firm 2 -The Weathergirl
PART 1: A COURTESY CLIENT BLOWJOB Three weeks into my gig at Coxon & Dicster had been a blast. At first, a few of the girls had some reservations about me working there because I wasn't transgendered myself but I guess I won them over with my naturally cheerful personality. At least,... Read full Story
bennyx709 2016-11-14 18,139 big dick anal sex suck Blowjob cock sucking workplace
50%
My transvestite evenings at the hotel,
My wife didn't want me to wear lingerie at home, so I ended up living my femininity without her knowledge. Cycling in my area, I took this excuse to start shaving my legs regularly like most cyclists do. Then, spending my holidays regularly on sunny beaches for surfing and sailing, I used aesthe... Read full Story
sandratvtg 2024-07-02 2,031 anal shemale Lingerie Sex Toys exhibition Vintage guepiere bad dragon dildo estim culotte fendue fémidom resebud
100%
Exposure, Disclosure
The Greatest Liar, Exposure, Disclosure © Alexandra Rios 2019 Author’s Note: This is a continuation of the narrative which commenced with “My Awkward Phase”, which I posted here previously. Readers may wish to read that before continuing, although I have written them to stand alone. Natives s... Read full Story
the greatest liar 2019-06-18 7,777 Teen (18+) Small Tits Amateur Group Sex Latina Blowjob gangbang Guy Fucks Shemale cum in mouth
100%
My wonderful life with Pat : Pat birthday
Today we will received a friend of Pat for her birthday Charles and Pat are friends since the kindergarden Today Charles is married with Suzanne. Charles has followed the Pat sexual changes from young man to lady shemale. Before being with Suzanne Michel had participated to several parties... Read full Story
jperrot 2021-07-21 3,237 Amateur Outdoor threesome Shemale and Girl Guy Fucks Shemale Ass to Mouth cum in mouth
0%
Latex succubus
The lights of the city obscured the supposedly brilliant starlight in the night sky, leaving only dim and scattered scattered stars adorning the gloomy night sky half-covered by dark clouds, and the crescent-like crescent moon guarding it in the distance makes the night seem less empty Lonely. Mayb... Read full Story
Alicexiao 2023-01-06 4,507 Crossdresser Cumshot Creampie Fetish domination Guy Fucks Shemale high heel boots
75%
Passion in the Rough
Tonight, I was searching in vain for a parking place close to the club, but unfortunately, I had arrived late and there were no empty spaces close by. I drove around and went down several streets in the same block until I found an empty spot. That was perfect I thought as I found a parking place and... Read full Story
Regina10 2024-04-27 3,519 anal Crossdresser Big Tits Outdoor Bareback Creampie Blowjob blonde Big Cock Ladyboy gangbang Guy Fucks Shemale
100%
Working for a Living Chapter 6
I slid out of the old Ford truck driver's side door. Surprisingly, my legs felt a bit shaky as my feet hit the concrete driveway of the Malibu mansion. I nervously straightened my cut-off shorts as I walked around the truck. She was waiting by the tailgate with a big smile on her face. "Wow Jai... Read full Story
shemale lover 2012-10-05 3,682 Group Sex Creampie threesome
50%
Plaid Pleasures - TG
Oh what a glorious time to be alive and horny. The miniskirt is back with a vengeance and the must-have item (for girls with the legs to show them off) was a short cute minikilt. I've never quite figured out why, but I've always found a tartan (or more commonly called plaid in the US) pleated ski... Read full Story
shemale lover 2011-11-05 3,133 sucking shemale cum
97%
How I Met Alyssa
I groaned as the sun was shining onto my face. I turned around so I could get some more sleep, but I saw it was 9:22 am and I decided it was time to get up. I got out of bed and went to the bathroom of my little apartment to freshen up a bit. I looked at myself in the mirror and saw a 20 year o... Read full Story
shemale lover 2013-02-12 14,268 hardcore sucking Big Cock ass fucking big boobs
66%
Sex in the kitchen with my hubby's friend - a cop
Ever since my wedding last year, I enjoy a great time with my hubby who loves me so much and takes care of me so much. Since he is married and having another family, he doesn’t stay with me all the time, but comes and stays at least 2 or 3 days in a month and we literally celebrate those nights wit... Read full Story
Manusha Tranny 2021-10-14 5,425 Small Tits Crossdresser Amateur Cumshot Outdoor Blowjob Big Cock Asian Ladyboy Guy Fucks Shemale Ass to Mouth cum in 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 5,528 Teen (18+) Crossdresser Group Sex Big Tits Bareback Creampie Big Cock gangbang domination Guy Fucks Shemale Interracial double anal webcams
91%
My Own Private Carolina (Part 1)
I returned to my hometown for what I assumed would be the last time. My mom finally decided to sell our old family home and move into a condo at the beach. It only made sense for her to do so. Since my father passed away seven years ago, there was nothing left to keep her there, and it was really fa... Read full Story
ThreeFlow 2019-07-30 8,362 Small Tits cum in mouth chubby shemale Swallowing Cum