Definition & Meaning of "bum boy"in English

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

Bum boy is a slang term that appeared in mid-20th-century English to describe a gay man, specifically implying sexual submissiveness or a receptive role during anal sex. The term combines "bum," a crude word for the buttocks, with "boy," emphasizing youth or subordination. Literally, it labels someone based on sexual behavior rather than personality. Historically, it was derogatory and sexualized, used to mock or demean men for their sexual role. Today it remains highly offensive and vulgar, generally limited to sexualized or informal contexts rather than polite or neutral conversation.