Yo Mama - NASA
Yo mama so fat NASA has to orbit a satellite around her
Yo Mama - Taxi
Yo mama is so fat, when she wears a yellow raincoat, people yell "Taxi!"
Yo Mama - Picture
Yo momma's so fat, I took a picture of her last Christmas, and it's still printing!
Yo Mama - Copycat
Yo mama so stupid that when she looked in the mirror, she said stop copying me!
Yo Mama - Bill Gates
Yo' Mama is so stupid, she thinks Bill Gates is another name for toll booths.