Joke: Yo mama so fat, when the doctor found out she had a rapidly progressing flesh eating bacteria, he told her not to worry about it.

Joke: Yo mama's so fat, she opened her email just so she could eat the spam.

Joke: Yo mama's so stupid, she saw "under 17 not admitted" so she brought 16 of her friends.

Joke: Yo mama's so ugly, monsters go as her for Halloween!

Joke: Yo mama's so fat, when she went to the beach activists showed up to push her back into the ocean!

Joke: Yo mama's so stupid, she got locked in a grocery store and starved.