A dumpy butt that is not round nor square, but rather a pile of sloppy mudd. this is not a good thing. This is typically found on white women in their early 20's to late 40's. this is can not be reversed with buns of steel, you will need plastic surgery in order to fix this problem which is sweeping across america.
The crustybrown material that gets transferred to the rear of the toilet seat or underwear, resulting from the accumulation of fecal matter at the top of an unclean, too-far-rear-wiping person's ass crack.
I almost sat in the hefty buttsmudge that you left on the seat!