Yo mama is so ugly that when Justin Bieber saw her, he said "Never."
Sex in the Car
Yo mama's so ugly, when your dad wants to have sex in the car, he tells her to get out.
Yo Mama - Mooning
Yo momma's so ugly, she looked out the window and got arrested for mooning!
Yo Mama - Steak
Yo momma is so ugly, her momma had to tie a steak around her neck to get the dog to lick her!
Yo Mama - Tail
Yo mama so ugly, the last time I saw something that looked like her, I pinned a tail on it.