OK then..
Yo mama's so ugly just after she was born, her mama'said "What a treasure!" and her father said "Yes, let's go bury it."
Yo mama's so ugly she looks out the window and got arrested for mooning.
Yo mama's like a bus; guys climb on and off her all day long.
Yo mama's like a Christmas tree; everybody hangs balls on her.
Yo mama's like a gas station - You gotta pay before You pump
Yo mama's like a race car driver...she burns a lot of rubbers.
Yo mama's like a railroad track; she gets laid all over the country.
Yo mama's like McDonalds... Billions and Billions served.
Yo mama's like butter, she spreads easy.
Yo mama's like the pillsbury dough boy - everybody pokes her
Yo mamas like walgreens open 24 hrs.
Yo mama's so fat when she steps on a scale, it read "one at a time, please"
Yo mama's so fat when she fell over she rocked herself asleep trying to get up again
Yo mama's so fat when she dances at a concert the whole band skips.
Yo mama's so fat uses blanket as a washcloth
Yo mama's so fat she fell in love and broke it.
WOW I didn't know I knew that much