Yo momma's so fat her ass has been declared the 10th planet.

Yo momma's so fat she needs 2 watches- her hands are in different time zones.

Yo momma's so fat that when she walked in front of the tv I missed all the commercials.

Yo momma's so fat she has her own zip code.

Yo momma's so fat that when yo daddy mounted her he passed out from lack of oxygen.