Yo' Mama is like a telephone book: available to the public, no charge.
Yo' Mama is so stupid, she gave your kids a "Yo' Grandmama Is So Stupid" joke book.
Yo' Mama is so ugly, she has to sneak up to water fountains to get a drink.
Yo mama is so fat, she doesn't fit in this joke.
Yo moma so fat that when I tried to have sex with her I burned my ass off the lightbulb.
Q: How big is a Republican-size bed? A: Wide enough for the man, the woman, and the ten-foot pole.
Yo mama so fat her boobs squirts out milk.
Yo mama so ugly it caused Godzilla to go back to the ocean.
Yo momma so fat that when she went to her prom she literally raised the roof.
Yo mama is so fat she has to write an apology letter to Japan.