I twirl my hair a lot for some reason. I don't keep it long either so it can be quite hard sometimes. I also crack my knuckles.

I apologise a lot, sometimes I even say sorry instead of goodbye. I think everyone who's friends with me is used to it by now, because they don't bring it up anymore.

I also have a poor grasp of ownership - not only will I lose my things really often, I might subconsciously take other peoples' stuff. It usually happens if I'm multitasking, and I can't process whether something's mine or not, so I keep carrying it with me and only realise it when I'm too far away from the person I just stole from. I always return it though, which often leads to hilariously awkward moments.

I absolutely despise when people do that. All three of my sisters do that. It's one of the reasons I won't let them near the Wii U or my DS unless I'm there.

Let's see... I also crack my knuckles, fingers, toes, neck, back, and occasionally my wrists and elbows when I can. I talk to myself/characters/objects/the game itself when playing video games. Not even in anger, but just sort of random jokes or telling a character to leave me alone or something, and I always rinse cups out when I use them, no matter what. Even if I know without a shadow of a doubt the cup is clean, I'll rinse it once or twice.

There's probably more, but I can't remember off the top of my head.