What you are left with after shitting your pants while clothed, with no restroom or relief in sight.
Glenny: "Dude, do you smell that ransid stench"
Crane: "Yeah, that F-Tard's gravy butt is wreaking up this whole elevator"
Glenny: "No shit, you can even see the skid stain"
When a wordfart/word is misjudged, it can drop some butt gravy onto the tighty whities. Is used to describe the gooey, mucusy ass slop that drips from a distressed bunghole.
Sucka MC: Damn, yo, I think I done shit my pants!
Pitied Fool: Naw, kid. You just dropped some butt gravy.
Butt gravy is the result of sweat in the butt-crack mixing with the solid crusted particles of feces around the outside of the anus to form a slimy substance with the consistency of gravy.
Man, I've been working so hard I can feel that damn butt gravy starting to form.
I shit myself and now am creating butt gravy between my ass cheeks.
The slightly viscous, brownish liquid found on a condom or the male genitalia after anal sex.
Billy woke up with a new outlook on life and butt gravy on his wang.
Butt gravy is what results when you've had the raging shits for several hours and you powder your asshole with corn starch to make it feel better.
Roy's got the shits and and now he's got the corn starch out for his butt hole. Man, he's gotta be brewin' some butt gravy in those shorts.
When you have been on a drunken bender for weeks and your girlfriend rims you and you blow a huge mucusey wet fart on her is my definition of butt gravy.
"sop up my butt gravy with some of that rustic french bread you got at the store honey"