* Yo Mama's so stupid, she got shoved in an oven and froze to death.
* Yo Mama's so stupid, she thinks fruit punch is a gay boxer.
* Yo Mama's so stupid, she got locked in a meat locker and sweat to death.
* Yo Mama's so stupid, she leaves the house for the Home Shopping Network.
* Yo Mama's so stupid, her latest invention was a glass hammer.