Yo momma is so stupid when an intruder broke into her house, she ran downstairs, dialed 9-1-1 on the microwave, and couldn't find the "CALL" button.
Yo' mama got such bad dandruff, the principal declared a snow day!
Yo mama so old she ran track with the dinosaurs.
Yo mamas so poor she traded her car for gas money.
Yo momma is like a toilet; fat, white, and smells like shit.
Yo Mama's so dumb she waited all day at a stop sign.
Yo mama so dumb, she thought General Motors was in the army.
Yo momma is so stupid, when your were born she looked at your embelical cord and says "It comes with cable!"
Your mom's so dumb, she threw the dog and told the stick to fetch!
Yo Mommas so stupid she got lost in a telephone booth.