Green’s Dictionary of Slang

(gay) a man who ejaculates into another man’s rectum and then eats all of what he has deposited there.

1978		L. Kramer Faggots 17: Was he interested in joining a felcher?
1997–2002		Alt. Eng. Dict. 🌐 feltcher (noun) A man who orgasms into another man’s rectum and then eats all of what he has deposited.
2001		D. Looser Boobslang [U. Canterbury D.Phil. thesis] 67/2: felcher n. a homosexual [poss. after the (homosexual) act of 'fe1ching', of which one version is to ejaculate into another's anus and then to suck the semen out again through a straw.
2002		Treasure Island Media video catalogue 🌐 Knocked Up [...] KNOCKED UP features a whole congregation of the hottest big-dicked topmen I know. Steve Parker, Titpig, Tom Shannon, Erich Lange (in his video debut as a bareback top), Jeremy (our world-class cum-eater and felcher), [...] and a bunch of other testosterone-driven men with nothing on their minds but fuck-or-be-fucked.
2024		J. Meades Empty Wigs (t/s) 119: I got a five cabin two stateroom six figure Hatteras motor yacht: Snow Leopard Of The Seas. I renamed it. Meisterfelcher said a bit too much about the previous owner.