Help needed.
 

I need a bit off help.

What would you do if you were in a van all day with a young lad driving round london. Him driving, and you stressing about the next job!

Everything's fine, wild bill(the green miile)lookalike is driving like a veteran taxi driver, but out of the corner of your eye you notice he starts to bite his nails...really really really loudly..

How would you deal with that?

I've started making a joke off it, but it irritates the hell out me. He spits them out as well.

tell him he has to swallow

Oh my days Parmy,that's a bit gross,just tell him it's not good to bite your nails and see how long he can go without biting them,make it a bet with him,lol.

I’m confused. What does the green mile look like?

tell him to close his mouth while he crunches

Nail-biting can be a pretty firmly ingrained habit... getting him to stop might be a challenge since it's probably mostly subconscious.

I have large rubber band for training purposes.

nail biting is bad for you, and your fingers

Chop his fingers off :laugh:

Make him wear gloves