Yo mama so fat she was the comet that destroyed dusty depot.
Yo mama so fat, that when she got on the titanic, it sunk right away, and the only reason that this story is different is because the people who've told others about it were scared that she would sit on them.
Yo' Mama is like a donkey: everybody rides the ass.
Yo mama so fat she was in a parallel universe.
Yo' Mama is so ugly, she not only got hit with the ugly stick, she must have got lost in an ugly forest.
Yo mamma so ugly when she was walking to the bank.
They turned of the security cameras.
Yo Momma's so stupid that she burned down the house with a CD burner.
Yo Momma so fat she has seat belts on the chairs to keep her fat from rolling off!
Yo moma so fat she jumped off the Grand Canon and got stuck.
Your mama is so ugly she jumps and the gravity did not return.