Yo Mama - Fix It Felix
Yo mama is so ugly Fix-It Felix said, "I can't fix it."
Yo Mama - Halloween
Yo mama ugly, she gets 364 extra days to dress up for Halloween.
Yo Mama - Vibrator
Yo mama so ugly, her vibrator went soft.
Dark Ages Insult
You should have been born in the Dark Ages, you look terrible in the light.
A friend of mine came up with a very quick response over vacation. We were walking down the street and I glanced at a girl who had just walked by. She turned around and said to me, "What are you looking at?" My friend, walking next to me came to the rescue, "He thought you were good looking, but he was mistaken."