After having anal sex, the stink from the girl's ass that remains on your weiner. I've found that scrubbing with a brillo pad is the best way to remove said stink.
The humid poopy butt stank aroma forced through a fat girls ass crack when she sits down to fast and causes a pungent wind drift that smells of a sweaty, poopy and dirty pubic hair stench that gives males a hard on because it reminds them of butt fucking a fat girl on a hot and humid summer night
Tanya's muddy butt stank filled my nostrils like rotten cake batter that made me throw up in my mouth a little bit right after I tounge punched her fart box that resembled a boiling mud hole that I saw at Yellowstone national park while on vacation this summer.
When in the course of your day you took a big dump but was unable to get your ass crack as clean as it needed to be because of those lame ass little toilet paper squares in the high school bathroom or the local gas station.
Stink butt usually comes into play when it inhibits people from having sex until they have had a proper bath.
I wanted to make it with the chick but I knew I had a bad case of stink butt.