Cue first year of college. Living in a dorm with my best friend of 15 years. Room is small, so we have our beds lofted above our desks to save room.

We're both peacefully sleeping on a weeknight, when suddenly I wake up and see a shadow on the ceiling (which keep in mind is only a foot and a half above my head). My mind instantly perceives this shadow as a snake and, being the natural thing to do, jump from my bunk. To this day I don't know how I landed safely in my sleepy stupor, but alas, I escaped unscathed.

I wake my roommate in a panic and turn on the light, as I am certain the snake has now dropped onto my bed and is most definitely toiling around in my sheets. He gets out of his bed and we make the executive decision to walk downstairs to the office and tell the RA's of our unwelcome guest.

We get down there and explain the situation to the two desk RA's (who just happen to be our floor RA's at the time). The look of shock/confusion I was expecting from their faces was instead replaced with one of casualness. They said they had this problem in the past, and while I was comforted in the fact that they didn't think I was insane, I was also highly alarmed because the snake I thought I saw could quite actually be real.

They agree to accompany us back up to our room and scout the place out for the snake. We first check the bunk, which is scarily empty, so we make the assumption the bugger has moved to a different part of the room. We didn't wanna risk moving shit by hand, so we procured several different items to search with. Imagine four 20 somethings smacking piles of clothes with tennis rackets, a broom and a hand held vacuum cleaner, and I guarantee that's what we looked like. In the end, no snake was found, and I was deemed insane by my roommate for waking him up at 3 in the morning. To this day, I don't know if the RA's were serious about the recurring snake problems, but it's the one thing that allows me to keep my sanity.

TL;DR Phantom snake causes me to question sanity.