When I looked at Yo mama's teeth, I didn't know whether to smile or to kick a field goal. Yo mama's teeth are so black, it looks like she's been eatin' coal. Yo mama's teeth are so yellow, she has to brush them with a butter knife. Yo mama's teeth are so yellow, I can't believe it's not butter. Yo mama's teeth are so yellow, she can butter a whole loaf of bread. Yo mama's teeth are so yellow, she slows down traffic when she smiles. Yo mama's teeth are so yellow, when she drinks water it turns into lemonade.