Yo mama's so fat, Godzilla tried to f**k her and fell in.
There were two security guards who worked on opposite shifts, but looked after the same building.
Over a period of a year, the night shift security guard noticed that his opposite was putting on weight.
So one evening at shift change, the night shift security guard says to the day shift security guard "Hey buddy, you aint half gettin fat".
To which the day shift guard replies "Yeah, that's because every time I shag your wife she gives me a chocolate biscuit".
Yo mama so fat she was the comet that destroyed dusty depot.
Yo mama so fat she was in a parallel universe.
Yo mama so fat, that when she got on the titanic, it sunk right away, and the only reason that this story is different is because the people who've told others about it were scared that she would sit on them.
Yo moma so fat she jumped off the Grand Canon and got stuck.
Yo Momma so fat she has seat belts on the chairs to keep her fat from rolling off!
Yo mama is so fat she doesn't need the internet.
She is already world-wide!
Yo mamma is so fat when she went to the movie theater people said "Look at king Kong in 3D."
Yo mama's so fat that when she puts on a jumper it's known as global warming.