Butthole gravy 

The brown watery sweat that builds up on ones butthole on a hot day.

Dude it's so hot out, my butthole gravy is definitely going to stain my drawers.

Butthole gravy by Huge hammer69 May 17, 2019

butthole gravy 

when you are in the act of sharting or shart and a stick fecal substance comes out

hey man, i was on the can and some butthole gravy came out

butthole gravy by Frankmeister August 28, 2008