As nutty as my roommates were in college, my med school roommates were much more irritating.
I lived in a four single-bedroom dorm suite in med school. It was a suite in that we shared a kitchen, but there was really no common area, aside from a small table with two chairs in the kitchen. I lived there for about two and a half years and roommates would come and go, some med students, most not med students. But the craziest roommate I had was a med student. We'll call her Teresa.
Teresa was an MD/PhD student in my class, and she didn't move in to my suite until some time during second year. She was very quiet, but always seemed nice enough. But as a roommate, she was odd and sometimes slightly frightened me.
She and I shared one of the two bathrooms and she was really odd about her bathroom use. With prior roommates, we had worked out some kind of system for the toilet paper, or else one of us would just replace it when it got used up. But Teresa insisted on carrying her toilet paper around. So I would hang toilet paper on the roll and she would bring hers into the bathroom with her. I was honestly OK with her using my toilet paper, but I guess she didn't trust me or I don't know what.
She also had this habit that drove me crazy: whenever she was done in the bathroom, she would leave the light on and shut the door. I have no idea why she did this, but it wasted electricity and always made me think there was someone in there. Finally, I just started bursting into the bathroom when I needed it, because I was sick of knocking on my own bathroom door every single time.
She also would not let me leave dishes in the sink. I was hardly a slob who left tons of dishes in the sink, mostly because I only OWNED two plates and two cups. So I simply didn't have many dishes to leave in the sink. But I would put, say, a cup in the sink, and I'd come back an hour later to find that Teresa had removed it from the sink and placed it on the kitchen counter. Every single time. Why did she do this? I still can't figure it out.
OK, but this was the frightening part:
As I said, I only had two plates and two cups. Additionally, I only had two forks. I had lunch earlier in the day with my boyfriend and we'd used up both forks, and I was feeling lazy and didn't want to wash them before dinner. So I did something really, really, really horrible and I borrowed one of Teresa's forks. Seriously, I don't know what I was thinking.
I did clean the fork after using it and then put it in the drying rack. Then later that night, Teresa banged on my bedroom door.
Teresa: "Were you using this fork?"
Me: "Um... what?"
Teresa: "I found this fork in the drying rack. Were you using it?"
Me: "I... I'm not sure."
Teresa: "Because this is MY fork."
Me: "Oh. I didn't realize. I, um, found it in my dishrack." (Lie!)
Teresa: "It was in your dishrack???"
Me: "Yeah, well... maybe someone put it there."
Teresa: "Wow, that's really strange."
Me: "Uh.. I guess. I don't know."
Teresa: "I've been knocking on everyone's doors trying to figure out what happened with the fork."
Me: "Uh... I'm sorry. I didn't realize it was yours."
Teresa: "See how the handle is white? All the utensils that look like that are mine."
Me: "Oh, okay. I see."
Needless to say, Teresa and I never became great friends or had any heart to heart discussions during our tenure as roommates.