Yo' Mama is so nasty, her vagina's in the Axis of Evil.
Yo' Mama is like ass hair: totally useless and full of sh*t.
Yo momma is so fat she was walking down the street, tripped and broke her leg and gravy rolled out.
Yo momma so fat she fell and made the Grand Canyon!
Yo' Mama is so stupid, she tried to put the leftover orange juice back in the rind.
Yo Mama is like a refrigerator. Meat goes in and out all day.
Yo' Mama is so old, she has sour cream in her boobs.
Yo' Mama is so stupid, she's as useless as a screen door on a submarine.
Yo' mama so poor, she fills her ice trays with toilet water!
Yo' Mama is so fat, when she did a cartwheel, she kicked an angel in the nuts.