Yo Mama - Sofa

Yo mama's so fat, when she goes to an office, they tell her to pull up a sofa.

A Talking Scale

Yo mama's so fat, she stepped on a talking scale and it told her "Fuck it, they don't pay me enough!"

Yo Mama - Population

Yo momma's so fat even if she was the last person alive, the world would still be over populated!