Yo' Mama is so poor, she considers the give-a-penny/take-a-penny cups part of her own "Save Yo' Mama" foundation.
Yo' Mama is so ugly, she has to sneak up to water fountains to get a drink.
Yo' Mama is so fat, she has to make a long distance call to talk to herself.
Yo Momma so fat she wears a vcr as a beeper.
Your mamas feet are so scaly you can see crocodile dundy in her foot bath.
Yo Momma is so fat, she can sit on a t3 cable and make the internet traffic slow right down to 1 bit per day.
Yo mama is so fat, she doesn't fit in this joke.
Yo mamma so black when she gets in the car the oil light turns on.
Yo momma’s so ugly, they use her face as a cure for constipation.
Yo mama is so fat, the recursive function computing her mass causes a stack overflow.