um, maam, you should consider a more flattering shirt as in that getup you are really just growing a buttshroom
when a large girl wears both a pair of low riding pants plus a belly showing shirt, the look from behind resembles a mushroom hence, buttshroom
"um, maam, you should consider a more flattering shirt as in that getup you are really just growing a buttshroom" What is the definition of "buttshroom"?