Yo Mama - Piece of Paper

Yo mama so flat she's jealous of a piece of paper!

Insights

Q: What do the sun and cleavage have in common? 
A: You can look at both for a second, but if you want to stare you need to wear sunglasses.

Yo Mama - Sunken Chest

Yo' Mama is so flat, pirates can't wait to get their hands her a sunken chest.