Yo mama so fat I had to take a train and two buses just to get on the her good side
Yo mama so ugly she turned Madusa to stone.
Yo momma so stupid she asked what's the number for 911
Yo mamma so fat, her belt size is equator.
Yo mama is so fat when she skips a meal, the stock market drops!
Yo momma so ugly that Bigfoot got a look at her once and he hasn't been seen since!