heavy duty booty
A large heavy-set person who is big and thick all over or a fat person who has a big butt.
You better put away those folding chairs and bring in the sofa. Why? Stan is coming over to have dinner and you know how gigantic he is, he's got a heavy duty booty and those folding chairs won't survive. big butt, big booty, heavy-set, fat, overweight, badonkadonk, twerking, big ass