Yo Mama so skinny, she turned sideways and disappeared.
Yo Mama is so stupid she put a quarter in a parking meter and waited for a gum ball.
Yo Mama so ugly, I took her to a haunted house and she came out with a job application.
Yo Mama so short, she has to get a running start to get up on the toilet.
Yo Mama so stupid, she stopped at a stop sign and waited for it to say go.
Yo Mama so stupid she noticed a sign reading 'Wet Floor'...so she did just that!
Yo Mama so stupid that when you were born, she looked at your umbilical cord and said, "Wow, it comes with cable too!"
Yo Mama so old Jurassic Park brought back the memories.
Yo Mama so old she sat in front of Jesus in 1st grade.