The act of taking a dump in someone's pillowcase and leaving it there until they fall asleep.
All of R. Kelly's friends and family have been gravyfaced at least once by him.
When you are partaking in the sexual act of face sitting, and the partner giving the face sitting has a bad case of explosive diarrhoea which errupts over the face of the partner receiving the face sitting.
* Susie had very bad diarrhoea last night, she gave her boyfriend a gravy face.
* Michael has a gravy face.
gravy face, a racist term given to a user if he's black on youtube, and being a troll about it.
"Hey gravy face, how about you do better arguments, and stop running your mouth, you nigger".
When one is eating anothers ass and is unintentially shit on. Typically caused by explosive diarrhea due to the tickling of the sphincter.
John was licking Jen's ass. Jen unintentionally leaked explosive diarrhea on John's face. Damn! Look at John's Gravy Face.