Because they want to prevent plaque build-up.
He didn't want any beef.
Because they take a fence to that.
My zipper.
Minivans.
Because of tooth decade!
She:No, I'm a dentist
Because it's a catastrophe :-) Yeah, ok, I'll be going now. EDIT: removed explanation.
A little plaque.
Stockholm Syndrome.
The Sithsonian.