"Yo momma's glasses are so thick she" joke

You mamma is soo fat she sat on a rainbow and skittles popped out!

Your momma is so fat when she fell in the grand canyon she got stuck half way down.

Knock knock?
Who's there?
Howie.
Howie who?
Howie gonna figure this out?

Chuck Norris doesn't read books. He stares them down until he gets the information he wants.

Yo mama is so stupid, it took her an hour to make minute rice!