Definitions by Grumblypants the 3rd

Gravy chin 

The act of eating a woman out in such an exceptional fashion, that the result is your face bears the uncanny resemblance to one who has shoved their face into a poutine, or other gravy coated food.

Dude, this girl gave me such bad gravy chin last night, I thought I was at Thanksgiving dinner.

Gravy chin by Grumblypants the 3rd November 3, 2019