apron
apron - a sagging, hanging flap of gut often seen in older ladies who have long since lost the weight of their youthful pregnancies, but also their elasticity. The result is a flap of flesh, sometimes slightly hanging over their upper pubic region/ gunt  Often a haven of foul body odor.
" During her weekly shower, aunt Ruth lifted her apron to wash, and the smell peeled paint off the wall"