Because it hides their teeth.
They just click you know
Me: I wrote what I knew, I copied what I didn't knew.
Losing teeth.
Buck teeth!
Dad: Where is the best place to hide an elephant? Me: I don't know, behind a big rock? Dad: In a tree silly. Me: In a tree? Dad: When's the last time you saw an elephant in a tree?
Hide their trainers.
Angry British people!
Arsephalt