Green’s Dictionary of Slang

1. to eat, esp. to stuff oneself with food; thus face-feeding n., over-eating; face-feeder n., an (over-)eater.

1894		Star-Gaz. (Elmira, NY) 15 May 4/3: Yale College Slang [...] [A]fter feeding my face I blew down to Mory’s with a couple of heelers.
1895		J.L. Williams Princeton Stories 39: In freshman year they say, ‘Are you ready to feed your face?’.
1905		‘Hugh McHugh’ You Can Search Me 61: ‘Will you feed the face, Dodey?’ ‘You betcha sweet!’ Dodie replied.
1908		Sun. Times (Perth) 7 June 4/7: O, grind the ten commandments out, / What time they feed a face.
1915		Bulletin (Sydney) 5 Aug. 47/1: ‘I was coming out of a Dago joint picking me teeth, when Big Thompson comes erlong an’ says, ‘Yer doing it well,’ says he. ‘Well,’ says I, ‘a man must feed ’is face sometimes.’.
1916		Sun. Times (Perth) 10 Dec. 95/2: An ornate prayer’s scarcely part of the game when the lusty bluenose fills his face.
1917		Truth (Wellington) 13 Oct. 1/7: Our Plute Parliamentarians [...] never tired of feeding their faces in Bellamy’s.
1927		W. Edge Main Stem 38: We asked our wobbly friend to feed his face with us.
1929		C. McKay Banjo 296: Ise got enough a them francs to blow fifty face-feeders with the few dollars I done change.
1930		G. Milburn ‘Gila Monster Route’ in Hobo’s Hornbook 159: Nothing in sight but sand and space; / No chance for a bo to feed his face.
1931		O. Strange Law O’ The Lariat 62: When yu boys have fed yore faces yu can start for home.
1947		R. Mealand Let Me Do the Talking 86: You just want money to feed your face and pay for your women. All you care about is Gabriel.
1955		D. Niland Shiralee 131: Come on, mate, and feed your face.
1960		E. De Roo Big Rumble 100: He’ll feed his face and go see the dames.
1968		‘Hy Lit’ Hy Lit’s Unbelievable Dict. of Hip Words 9: Buttermilk-bottom had best cut down on his face feeding.
1977		J. Rosenthal Spend, Spend, Spend Scene 4: My dad always fed his face off the mantelpiece. He said it was because he never knew where the chairs were.
1979		E. Torres After Hours I didn’t really stuff my face. I can’t enjoy a good scoff with a whole lot of fancy people around: .
1980		Barltrop & Wolveridge Muvver Tongue 71: They’d been feeding their faces so much they could hardly move.
1992		J. Severson Getting the Best Out of Your Juicer 2: Just cut into strips and feed the juicer, then feed your face.
2004		R. Cox A Silent Struggle 111: All you ever do around here is feed your face, get drunk, and go to sleep.
2015		S. King Finders Keepers (2016) 147: He’d love to get some payback from the fat son of a bitch now feeding his face with fancy food.

2. to feed someone else.

a.1948

(con. early 1930s) C. McKay Harlem Glory (1990) 46: To keep always in the white folks grace / [...] / You must know how to feed they face.

3. to indulge in oral intercourse.

1983		R. Klein Jailhouse Jargon and Street Sl. [unpub. ms.].
1997		Solar Project ‘Zeitgest’ 🎵 on ...in Time [album] You sit on my face, I dine at your Y / Blow job, gob job, sixty-eight / You feed your face and eat my meat / My fist into your Dead End Street.