Yo mama's so fat, when I finished having sex with her and tried to roll off, I was still on her.
"Yo momma so fat she stands in two time zones!"
Yo Mama has touched more knobs then the gas man.
Yo mama so stupid she though iHop was a gym!
Your mamma is so stupid she tripped over a cordless phone!
Yo mamma's so stupid she got trapped in a bathroom and wet her pants!
Yo' Mama is like a hockey player, she doesn't change her pad for three periods.
Yo mama's so lactose intolerant, human kindness makes her throw up!
Yo mama's so technologically unsavvy, she leaves out pieces of cheese next to the computer!
Vote:
Yo mama so bald, when she goes to bed, her head slips off the pillow.