Nail biting

[vera]

I stopped biting my finger nails during my second pregnancy, but never had the desire to bite my toe nails.

 

[accyman]

put pepper on your bum.

i guarentee after a good itch the last thing you will want to do is bite your finger nails

 

[Ken Moss]

Clip your nails. The only reason I ever bite mine is because they've get too long and are uncomfortable but the second I clip them all desire goes out of the window.

My aunt used to recommend quinine paste under the nails but I doubt you can buy that anymore.