Yo Mama - Yellow Rain Coat

Yo' Mama is so fat, when she wears a yellow raincoat, the kids yell, "Here comes the school bus."

Yo Mama - Keyboard

Yo momma's so fat, when she uses the keyboard she presses every key at once!

Yo Mama - Monster Truck

Yo mama so fat, she got hit by a monster truck and said, "Who pushed me?"