My mama so fat, when she fell in love she broke it.
My mama so fat, my daddy is blind.
My mama so fat her nickname is "DAMN"
My mama so fat she had to go to Sea World to get baptized.
My mama so fat when she gets on the scale it says to be continued. 
My mama so fat she looks like she's smuggling a Volkswagon! 
My mama so fat that when she hauls ass, she has to make two trips!
My mama so fat she put on BVD's and by the time they reached her waist they spelled out boulevard. 
My mama so fat God can't lift her spirits!
My mama so fat the police dogs stopped her at the airport for having 10 lbs of crack. 
My mama so fat she fills up the bath tub, and THEN turns on the water