What is a really good yo mama joke?

Yo mama so stupid that she married your dad.

Yo mama so stupid she asked for a price check, at the ..............dollar store.

Yo mama so fat she downloaded cheats for ....................... wii fit.

Yo mama so fat when she went to the school, wearing a yellow trench coat the kids said,"Look it's the school bus"

Yo mama so fat when she went swimming is the ocean, a whale came up to her and started to sing," We are family, even thought you're fatter than me!"

Yo mama so ugly, when she went to the ugly contest, the judge said,"Sorry, no professionals."

Yo mama so ugly, she looks like you

Yo mama so old, she got drunk when she took a sip of whine cooler.

Yo mama so poor, when her friends bring wine over, she charges a corkage fee.