oh i have another.
for some reason I pinch my temple (thats the area above your nose between your eyes)
i also chew on the sides of my mouth, not like my cheeks, it I can't explain it.
also I have a weird habit involving my pointy finger. I push it under my chin and it pops, I do that like 30 times in a row.
Hurting myself.
Not in a horrible fucked up cutting myself way LOL
But I pick the skin off the side of my thumbs all the time..to the point where it bleeds. When I see it bleed, I get happy, and I dig more making it worse and worse. Then I stop, let the blood get dry and keep going. Once I think it's deep enough, I move onto the next space on my thumb that I can dig into more.
The more painful and the more blood I see, the more I get happy. Then I stop though after my fulfillment.
I've tried to stop but it's really hard.
I do something similar but use my teeth.