Definition & Meaning of "berk"in English

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

"Berk" is British slang that appeared in the early to mid-20th century as a mild insult meaning a foolish or stupid person. The word comes from Cockney rhyming slang: "berk" is short for "Berkshire Hunt," which rhymes with "cunt," though most speakers have forgotten the vulgar origin. It is used in informal speech, often teasing someone lightly rather than expressing serious hostility. The term is derogatory but mild, generally humorous or cheeky rather than deeply offensive.