Who's crazy?

How do you know if you're insane?
Am I insane if I do the following:

Think everyones looking at me and saying how stupid I am
Swear to myself all the time
Lose my temper over the slightest thing
Get paranoid when someone doesn't want to talk to me
Faint or vomit when I have to be around people I don't know
Why do I laugh at things that shouldn't be funny? (some guy in a magazine had a sex change and I laughed my ass off because he still looked like a man)

Why does my arm jerk when I'm nervous?
Why do I shiver all the time?

Can anyone answer me? Am I just a nut?

I don't think you are crazy because you're aware of your quirks. Insane people don't know they're insane because they've lost touch with reality altogether.

I don't think you're insane! You're lucid about your issues. I think everyone on this forum is. When I cry to my mom that I think im crazy or a nutcase, she says: remember, truly crazy people don't know they're crazy!
take care!

Holy moly! Corsa's comment wasn't there when I wrote that, and we said the exact same thing in different words. NOW, that's CRAZY!!!!