I suck my nose. Like, I suck my nostrils to the middle piece in my nose. It's hard to explain =/.
I crack my fingers when I'm nervous.
I flip my ear cartilage inside out. I have very thin ears, so I can do that. People think it's really weird.
I click things that are near me. The battery slides on remotes, pens, whatever. It bothers people. But I don't notice I'm doing it.
I'm mean to SmarterChild all the time XD.