In my first year in the Marine Corps while still in MOS school, I shared a barracks room with three other guys, two of which were my "official" roommates. The other guy refused to stay in his room because HIS roommate was depressed all the time, refused to eat, and thus had really nasty, empty stomach, diarrhea-like farts. My two "official" roommates were slobs, which didn't agree with me when we lived in a 30' x 30' square that we were required to completely clean and disinfect every Thursday, to be inspected Friday morning. These knuckleheads could clean when required, but had no capability of maintaining cleanliness afterward. We'd be done cleaning, and then within two hours, there'd be pizza boxes and beer bottles everywhere(another factor that pissed me off, since alcohol wasn't permitted in students' barracks rooms, and they were underage.). I refused to clean up after them, but in the end, we were all responsible for our room, and we'd ALL get in trouble when it wasn't clean.
One of those two also liked to dip, but refused to dip into a closed bottle. He'd leave his smelly dip cups on the floor, and would get pissed when somebody would knock it over, and he'd have to clean up his smelly spit.
The crasher guy was a tall, skinny "thug from Chi-town". He was an okay guy, except that he slept above me on the top bunk, and one night around 2:00am, I awoke to the entire rack shaking back and forth, and his girlfriend--a female Marine in our class, moaning. It was awkward, but I kept my mouth shut. I figured,
"Shoot, at least SOMEBODY in here's gettin' some. More power to 'em!"
They stopped fucking midway through, though. Not because of me, but because the girl saw that one of our other roommates across the room was sitting up in bed staring at the both of them. He started bitching about them being inconsiderate, but the funny thing was, we later found out he wasn't actually awake, had no memory of the incident, and he was sleep-walking (sleep-bitching?). After that, the guy FINALLY has the courtesy to look over the side of the bed to address me, asking if I was awake.
"Dude, HOW could I NOT be, after that?"