Joke: Yo mama's so stupid, she locked her keys inside of her motorcycle.

Joke: Yo mama's so fat, Dracula bit her and got diabetes.

Joke: Yo mama's so fat, she jumped for joy and got stuck.

Joke: Yo mama's so fat, that when she stepped on a scale, it said "to be continued."

Joke: Yo mama's so fat, she gets welfare for being "Too big to fail."

Joke: Yo mama's so fat, she wakes up on the wrong and right side of the bed.