Because they chew balls.
A person that lays awake late at night and ponders if there's such a thing as a dog.
The wrong answer.
A baby chewing on a razor blade.
So they have a place to put there chewing tobacco when brushing their teeth
Optical.
DOG: YES! HOW'D HE FETCH IT BEFORE ME
I've memorized a lot of jokes from a previous "doctor joke" thread, and need some fresh material!
It has a lot of mussels.
Because it has a carpool tunnel.
A masochrist.
