This happened last night and i still can't really believe it.

So I'm a 20 year old university student in Canada, and midterm season is just closing down. I go out to a bar, get home at around 1:30, and go to bed under the realistic assumption that my night is over.

Now I live in a house with 5 other guys, so more often than not the front door gets left unlocked. As dumb as that is, we've never really had any trouble, and in any case, I always take my stuff into my room and lock the door. Last night, however, was special. Last night, I left my door unlocked, as a friend of a room mate was visiting and he was going to wake me up early so I could show him around the city. Drunk me is very ambitious, although i knew that I'd most likely flake once daytime rolled around.

Anyways, at around 3:30, I wake up, and am very aware that there is somebody else in my room, and that i hear the sound of running water.

The conversation more or less proceeds as follows:

Me (groggily): Who's there?

Intruder: Me

Me: is that ----? (---- is the guy staying with us, I Don't know him very well but the voice sounds kind of right)

Intruder: no

Me: What's that sound? I'm very confused

Intruder: I don't know.

Me: Are you peeing?

Intruder: No.

I didn't buy it.

So i got up, turned on the lights, spin around, and see a girl that I have never before seen in my life. She's peeing on my floor, and looked very confused.

Me: Who the fuck are you?

Her: Who the fuck are you?

Me: This is my room. You're in it, I don't know who you are, and you just peed on my floor.

Her: I have no idea how I got here.

So initially i got really pissed off and told her to get out of my house. I then realized that she was pretty legitimately confused, so I figure she might have been roofied or something so I call her back and ask her who she is and where she's supposed to be.

Turns out she's my neighbor's visiting friend. I brought her downstairs, then returned to my quarters to clean up a stranger's pee.

TLDR: Left my door unlocked. Girl I've never seen before sleepwalks into my room and pees on my floor. Confusion ensues. I clean it up.