I twitch. Alot; I pop my neck, blink in a weird way, fiddle with my adam's Apple [you know what I mean, pervs? lol], and I vocalize under my breath uncontrollably for some reason. I think it's something from latent Tourette's or something lke that.
Oh, and I'm always shaking my foot whan I'm sitting down? it's really annoying to everyone around, but I can't go without doing it?