Adding my husband's roommate-from-hell story... this is actually from his first year of grad school (does that count?)
As an undergrad, he lived in a dorm that was almost all singles, so he never had a roommate. (Lucky stiff!)
During his first year of grad school, he lived in an on-campus apartment that he shared with 3 other guys. The apartments in this building were all single-sex, and you were just thrown in with random people. The apartment had 4 single bedrooms, a kitchen, a bathroom, and a lounge.
Two of his roommates were cool... they kept to themselves mostly, and spent most of their time in lab. (Ah, the life of a grad student
)
His third roommate... well, he was a nice enough guy, and he had some great stories (he'd been in the Air Force and served during the Gulf War) - but he had the most rank B.O. I have ever had the misfortune to be exposed to. You could smell this guy a mile away even if you were upwind of him. When I stayed overnight, I either hit the showers before he did (he did actually shower every day, but he still stank), or I would go back to my own dorm and shower there.
We used to joke about how we had to arrange a visit for him from the Right Guard Fairy...
He was also an Amway salesman, and pretty much ate only their food, because he got a discount. Our theory is that his B.O. was partly due to the fact that he only ate processed food, no fresh fruits, veggies, meats, etc. Ick.