Definition & Meaning of "dick munch"in English

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

Dick munch is a slang term that appeared in mid-20th-century English to describe a contemptible person. The term comes from the literal image of someone performing oral sex on a penis, which is used metaphorically to signal lowliness, servility, or disgust. Historically, it was derogatory and insulting, used to belittle or mock someone's character. Today it remains vulgar and offensive, typically appearing in informal, mocking, or aggressive contexts rather than polite conversation.