Yo mama is so ugly she reminds me SUN, is hard to look at her. 
Yo' mama so fat, when she was a baby, she took a bath with a rubber albatross.
Yo mama's so fat, she's got more chins than a Hong Kong phonebook.
Yo' Mama is so fat, people use her butt cheeks for a ski slope.
Yo mama is so ugly she made the ugliest person in the world cry.
Yo momma so fat people jog around her for exercise!
Yo mama so fat all the McDonald's food are gone.
Yo mama so fat, when your dad tried eating your mom's pussy his head stuck in.
"Yo momma so fat they have to grease the bath tub to get her out!"
Your momma's so fat the only time she sees "90210" is when she's on a scale.