Yo momma is so fat, when she hauls ass she has to make two trips.
Yo momma is so fat, her arse cheeks have their own post codes
Yo momma is so fat, she needs a boomerang to tie her belt.
Yo momma is so fat, she has to take the shoe-shine's word for it.
Yo momma is so fat, when she got lost they had to use the whole milk-carton (in the US, they advertise for missing persons on one facet of the milk-cartons)
Yo momma is so fat, people from Grand Canyon travel to visit her arse-crack.