Yo momma's so fat, that when she went to the zoo, the hippos got jealous.
Yo momma is so ashy, every time she rubs her arms it snows.
Yo momma's so fat, she has more rolls than a bakery.
Yo momma is so ugly she turned Medusa into stone.
Yo momma's so fat, the only way to get her out of a telephone booth is to grease her thighs and throw a Twinkie in the street.