Knock Knock - Cow

Knock knock.
Who's there?
Cow goes.
Cow goes who?
No, cow goes "Moo!"

Jumping On The Bed

Q: How do you stop a black kid from jumping on the bed?
A: Put velcro on the ceiling.
Q: How do you get him down?
A: Blind fold two Mexican kids and tell them he's a pinata.

Mexican Fire Truck

What do you call two Mexicans on the back of a firetruck?
Jose and Hose B