Yo' daddy's so ugly, when he looked out the window he was arrested for mooning! 
Yo Momma so fat, she's gotta wake up in sections.
Yo mamas so fat she fits on both sides of the bed.
Yo mama cooking so bad, the flies chipped for a screen door!
Yo mama so dumb that when she looked in a mirror she yelled stop copying me.
Vote:
Yo Momma is so ugly that she scares blind people!
Your mama so fat, that she can use herself as a bowling ball and get 10 strikes in all of the lanes!
Yo mama so ugly when Santa came down the chimney he said ho! ho! hoooollly shit!
Yo momma is so stupid she stared at an orange juice container for 2 hours because it said concentrate.
Yo mama is so short you can see
her feet on her passport picture.