Because they want to make teeth straight and white.
When do we want 'em? Time machines!
Me: picturing myself leading an army of gorillas into battle "Independence."
Dental floss !
Your teeth!
Because they hate shorts.
Because they're lazy, and they hate U.
Shoot lions.
The dentist pulls it out when it hurts.
A Pander.
It's a wildly successful game that only has straight, white main characters (I stole this joke from somewhere but am not allowed to say where)