Just a few i have heard before lol, add your own in a reply lo..
Your momma's so fat that to get on her good sides you have to take 2 trains and a taxi!
Your momma is so stupid she was talking into an envelope thinking she was going to make voice mail
Your momma is so stupid she fell over a cordless phone
Yo Mamma So Stupid, That She Put A Ruler Against Herself When She Went To Bed, To See How Long She Slept
Your mamma's so ugly that when she went on fear factor they made her look in the mirror 4 5 minutes!