Yo Mama - TV

Yo mama so stupid she sits on the TV, and watches the couch!

Knock Knock - Pencil

Knock, knock
Who's there?
You ever hear the joke about the broken pencil?
You ever hear the joke about the broken pencil who?
Nevermind, it's pointless.

Library

A blonde walks into the library. She walks up to the counter, SLAMS a book down and screams at the librarian, "This is the WORST book I've ever read! It has NO plot and far too many characters!" The librarian looks up and calmly remarked, "So, you're the one who took our phone book!"