Definition & Meaning of "felcher"in English

What is the origin of the term "felcher" and how is it used?

Felcher is a slang term that appeared in mid-20th-century English to describe a person who performs oral sex on a partner's anus in order to ingest semen. The term likely comes from sexual slang circles, where it developed as a precise label for this specific sexual practice. Historically, it was vulgar and sexualized, used to describe a behavior that was taboo or explicit. Today it remains obscene and offensive, and its use is generally limited to sexual, informal, or subcultural contexts rather than polite or neutral conversation.