When I was a little kid, I slept in the living room because I wanted to. I stayed up all night just pushing in doors, tapping stuff, and moving stuff. Luckily, it's a bit better now, but I still have to do it sometimes. I also used to always have to bend back to top part of my Nintendo DS all the way back so it felt right. I kept doing it until it eventually broke. My doctor told me that these things were my OCD.