I also slept on an adjustable bed intended for the elderly/disabled for most of high school, and still do when I visit my parents.
Once in high school me and 3 friends also decided, after seeing the Buffy episode "Hush", to have a "Hush Thursday". We came to school with whiteboards around our neck and didn't talk all day. We were the only four people in the school doing it, and didn't explain our reasoning to anyone.
The other day I spent probably 30 minutes just memorizing Pi to the 15th or so digit for no reason.
I frequently talk to myself.
Probably the thing I'm most famous for is creating a Facebook group called "The Hardest Part of a Zombie Apocalypse Will Be Pretending I'm Not Excited". It's got around 150,000 members and was once mentioned on a CNN.com article.