Do you bite your nails ?

Nope
when I was 4 I did
Not anymore.
If I'm nervous I bite my lips or something

Yes I do.
And when I don't have anymore nail to bite.
I bite the skin around the nail.

Bad habit :X

Yes I do but only when I'm nervous or stressed out :/

Yes, unfortunately. It's such a bad habit but I just can't seem to stop, lol

Why does it get on your nerves? And i have done it since i was little...

Biting finger nails satisfies one's biological need to release their urges, these urges may include anger, stress and emotional problems. It is natural for one to bite his own figner nails.

I do. It's just a bad habit. I never notice that I'm doing it though until I realize it way later.

Never have. It's not good though, the bacteria from your nails can get in your mouth. yuck.

No, I pick at them and rip them. But only when I'm nervous or really bored.

when i get nervous i kind of chew on them, but not to the point where they chip off