Yo mama's so old that the last time she got laid she used a dinosaur-skin condom.
Yo mama's so dirty that I had phone sex with her and got an ear infection.
If watching your friends make them up isn't enough, there is a show on MTV called "Yo Yomma" where the best jokes win.
Yo Momma's so fat she saw a bus go bye and shouted, "stop that twinkie!"
Yo Momma's so stupid she got hit by a parked car.
Yo Momma's so poor that when her ciggarette went out she said, "Where did the heat go?"
Yo Momma's so fat she farted in the Gulf of Mexico and caused Hurricane Katrina.
Yo momma so fat...
Yo momma so dumb...
Yo momma so ugly...
Yo momma so slutty...
Yo momma so old...
You have to make yourself sound black when you say them. It doesn't really make them funnier or less annoying, that's just what you have to do.
Yo momma so fat, she walked in front of the television and I missed three commercials.
Yo momma so dumb, she stared at the orange juice carton because it said "concentrate."
Yo momma so ugly, when she tried to pay the male prostitute to bang her he looked her up and down and said "No way. Even sluts have standards."
Yo momma so slutty, even Snooki can't keep up.
Yo momma so old, Jesus was in her yearbook.
The're usually used by a 12 year old with no life
Yo mommas so fat, when she swims in the ocean the whales start singing "we are family!"
Yo mommas so ugly, when she looks out the window she gets arrested for mooning
Yo mommas so old, she owes Jesus 5 bucks
Yo mommas so stupid, she tripped over a cordless phone