It's more something people would normally notice but don't seem to in my case than something weird, but I have a really subtle case of Tourettes. It makes me stretch and clench my fingers really hard, roll my eyes around a lot, flex pretty much every one of my muscles that can be flexed, make really short humming noises, make weird movements with my jaw, slam my teeth together (some of my molars have probably moved out of place by now), move my ears, make this weird face that stretches the skin on the sides of the space between my nose and mouth, bend my head back and then bend the bottom of my spine forwards, and probably some other things I can't think of. One of my friends noticed it once, but that's about it. I don't geddit.
[sub]I never realised 'til now how many things it makes me do...[/sub]