"My university only had single rooms, so I didn't need to deal directly with a roommate, but the guy who lived next to me would bring home his girlfriend almost on a nightly basis, and they'd be really loud. Squeaking of a bed or something I could deal with, but I could hear every word, detail, moan, grunt, etc.
It was really inconsiderate to both myself and the person on his other side when we were being woken up at 3 in the morning because they couldn't quiet down a little bit." -Reddit user querulant
"One of my roommates in college had raucous parties, broke the wall, left vodka bottles everywhere, and had a huge one with 12 people (in a tiny apartment) on the night before finals.
I hated his guts." -Reddit user Contravening9
"I lived with two psychos - a married couple - who freaked out any time I peed in the toilet water itself rather than around it. They claimed the sound made them physically ill.
Of course, they could just as easily post on here about their psycho former roommate who insisted on peeing in the toilet water." -Reddit user deleted
"My roommate would poop like a normal person, that's fine. But when he wiped, he wouldn't flush the toilet paper. He would put the crappy pieces of TP in the trash can! It smelled the entire dorm room up.
Not to mention he expected me to take the trash out. The trash can was about 1ft tall, and the poop-TP mountain was more than twice the size. It was just leaning against the cabinet under the sink. It was disgusting!" -Reddit user deleted
"My roommate showered twice a week. He never washed his towel throughout the entire semester and used it to clean up messes and wipe his mouth after brushing his teeth.
He also never changed his sheets the entire year." -Reddit user deleted
"I'm in bed with my girl. My roommate knocks, so I yell at him to give us a few minutes to get dressed. He barges in anyway, and as we hastily get under the covers, he starts yelling into the hallway for everyone to come to look at us.
He doesn't leave for what seems like forever, and a couple of people come by to join him in taunting us. EDIT* This takes place in a dorm with 70 people per floor." -Reddit user pizza_piez
"I am currently living with a roommate who brings her boss over every night. We have very, very thin walls, and our beds are located just on the other side of the walls from each other (this is the only way the rooms can be arranged). I can hear everything that goes on.
Everything. Well, I could, at least. Now I blast Teletubbies every time he's here."
-Reddit user elya93
"My roommate, as a freshman in college, stole a pair of my underwear, wore it out for a night, came home, dropped trow, pissed on the floor/underwear, and lit them on fire.
In the morning, he claimed he blacked out." -Reddit user rick_G
"Freshman year of college, I lived in a tiny forced triple with one really cool girl and one crazy girl. The crazy girl had gynecological issues but refused to see a doctor about them. She only got her period twice a year, so when she did get it, they would be extremely heavy and last for several weeks. She also refused to wear tampons because they were "weird." So she would wear pads but would constantly bleed through them and onto her clothes.
However, instead of putting her bloody clothes through the wash like a normal human, she would soak them in bowls of water on her desk. Our entire room reeked of period blood. This went on for weeks." -Reddit user deleted
"My first roommate in college was terrible. He stayed up late, either talking to his girlfriend or watching Naruto or whatever on his laptop without using headphones.
Then he started cutting people's hair in our bathroom. Shaving and not cleaning up the hair afterward, ever…" -Reddit user biga29
"My roommate accused me of being racist (behind my back to other housemates) because I didn't want her to throw a party.
She then denied it and blamed her brother when confronted." -Reddit user ClareBear
"This just happened last week. My roommate puked on the carpet and only put a towel over it.
He didn't even clean it up, just let it dry up, and then he took the towel off. The grossest person I've ever met." -Reddit user Dragoonie
"My roommate used something called a menstrual cup. It's basically a cup you stick up to collect menstrual blood.
Anyway, several times I caught her using my cookware to sanitize her menstrual cup, and on several occasions, she would leave a red ring around the shower drain, because that's where she would empty it." -Reddit user make-shift
"My sophomore-year roommate in college complained to the RA and RH (we were living in a dorm at the time) that my computer keyboard was too loud.
He was sleeping with earplugs at the time." -Reddit user whitehat2k9
"Sophomore year I shared a bathroom with two suite-mates. After a long weekend that I spent at home, I returned to my dorm to find my bathroom rug rolled up burrito-style.
Not thinking, I fling it open to spread it back out, and HUGE chunks of festering shrimp-puke go flying everywhere."
-Reddit user bigrob31