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.
Girl 2: Yeah fill me up with your warm cum daddy. Fun fact: Since you said fat ass in that sentence you’re implying that all your cum could cover my fat ass.
*A conversation between a couple is screenshotted and posted*
*The screenshot is then posted on instagram*
Caption: “After midnight conversation are a fat ass nut PERIOD🤪🤤”