when you have such an explosive and uncontrollable case of diarrhea that it's leaking from your anus and your ass crack smells like poo until the storm passes.
momo must had a severe case of gravy ass because he smelled like a rotting corpse in close quarter combat.

tricky_trouble: hello gravy ass
by analman388 April 30, 2016
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Ass nut lamb gravy is a synonym for a greasy nut you bust in someones ass that has the same consistency as some cold gravy. It's usually used in some weird kinky shit where people like to be embarrassed sexually, or be talked down to like some sort of joke.

Could also be used in a sarcastic tone, but personally, I dont think ass nut lamb gravy is a joking matter. It's very serious.
"Take my ass nut lamb gravy you disgusting thanksgiving whore"

"I'd be careful buddy, dont wanna catch some ass nut lamb gravy by accident"

"You smell and look like a bowl of rotten ass nut lamb gravy, put on some deodorant"
by badgerbud604 October 14, 2017
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