[Dreamer]

I bite my nails and toe nails :P
I bite my clothes and everything. Chew..

[caraez]

Fumble with buttons, pens, pencils, paper, almost anything.

[Nasmoe]

I think I just kind of fumble with my hands or pop my knuckles.

[lycanized]

I bite my nails and my lips and cheeks lmfao!
...I got off biting my nails for a while, but the insides of my cheeks and my lips had sores on them...

[Soma]

I just have trouble keeping steady or the opposite I get really stiff then twitch lol. I usually play with my hands, tap my foot or play with my hair.

[Danse Macabre]

I bite my nails and my lips and cheeks lmfao!
...I got off biting my nails for a while, but the insides of my cheeks and my lips had sores on them...

Me too!
I also fiddle with my glasses and hair.

[nikkii]

I pace over and over and over and fidgeting with my hands and toes. I hate biting my nails.

[supermarionbros]

I fumble with whatever's near me [clothes, hair, pencils..], look down on the ground a lot, stutter when I talk, my heart beats faster...

[valentine]

I pace. Also when under an extreme amount of stress I act all sorts of hyper/loony/manic.

[Drea]

I constantly brush my hair behind my ears. Also, if somethings in my hands, I rip it to shreds. Lost a lot of homework reports this way.

I also have a really bad habit of putting things in my mouth when I'm nervous. I usually just eat my shirt sleeves, but I've gone as far as to stuff a sponge in my mouth(without really realizing it) and almost gag myself and I put my ipod in there once. Weird little habit.