Seems like almost all of us bite off skin from our body, Were all self cannibals.

1. When ever I find a group of object I try to arrange them so they evenly align with each other.
2. I use to bite the skin on middle of my upper lip until i was like 10, still do it when I'm really really nervous.
3. Also do that hand thing with the car.
4. When it's raining and I'm in a car I pretend the raindrops are racing down the windshield.
5. Scratch my arm even if it doesn't itch.
6. I say "Ok" alot when people are talking to me, I feel like punching there face when there like "No, It's not okay."
7. I also say Like and What If and Hey when I start most sentances when talking to a close friend.
8. I draw on shit, Alot, even myself, I've done it so much and gotten so good at it some of my friends and there friends ask me to draw shit on them.
9. I go "Fssst!" at cats when they annoy me, even if there not doing anything at all.
10. I sometimes see a small black blob on the floor out of the corner of my eye and always wonder if it's following me or just a figment of my imagination.
11. I blow bubbles with my mouth randomly out of boredom.
12. I constantly clean my glasses even when there not dirty.
13. I will clean my nose (pick it, sniff inward) even if it's clean.
14. When I get an itch in my throat Ill flex the muscles on the inside of my neck and use the pressure to try and itch it causing a Ck or Hkck sound.
15. I'll swallow air and burp alot, for those who don't know how to do it you wont understand just how important it is to practice it daily.
16. Suck on the collar of my T-shirt.
17. Pull the tag off of ANY shirt or cloths I have, even if they don't bother me.
18. Pick off any scab I can, I don't care if it needs to heal, I will pick that sucker with all the power I can muster.
19. Make clicking sounds with my tongue.
20. Clean my teeth with my tongue, even if there already clean.

I tend to stick pens in my mouth and chew on them or suck on them, but like... I dunno, it's weird. At work, I'll be like "HEY A PEN" and pick it up and stick it in my mouth and just leave it there for a couple of hours, twirling it around or biting it or something.

I do the same, Almost ruined one of my best pens that way too so I'm trying to stop.

Holy crap man, I do the exact same thing except its usually sonic.

I like to spin objects in hand when I am just sitting around and I am bored.

Off topic, your avatar made me laugh, hard.