Definition & Meaning of "rectal-rooter"in English

What is the origin of the term "rectal-rooter" and how is it used?

Rectal-rooter is a slang term that appeared in mid-20th-century English to ridicule a man for practicing anal sex. The term combines "rectal," referring to the anus, with "rooter," a crude metaphor for sexual penetration, creating a mocking label. Historically, it was derogatory and insulting, used to shame or belittle men for their sexual behavior. Today it remains highly informal, vulgar, and offensive, generally limited to joking, sexualized, or aggressive contexts rather than polite or neutral conversation.