they are joke, don't take them seriously, any attempt of doing so will be mocked by me.

1. Yo mamma so fat, she fell over and created the grand canyon.
2. Yo Mamma so ugly, she's like a shotgun, Devisating at close range.
3. Yo Mamma so fat, she saw a yellow bus full of white kids and yelled: "Stop that twinkie"
4. Yo Mamma so dumb, she sat on the tV and watched the couch.
5. Yo Mamma so Ugly, she gives Jason nightmares.
6. Yo Mamma so Dumb she got hit by a parked car.
7. Yo Mamma so Poor she couldn't afford a free sample.

Best yo Mamma Joke heard by a commenter: Insanctuary's joke: You mamma so fat she uses saturns rings as a hula hoop.

Submit your "Yo mamma" jokes in the comments