Definition & Meaning of "dick licker"in English

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

Dick licker is a slang term that appeared in mid-20th-century English to describe a contemptible person portrayed as servile or degradingly submissive. The term comes from the literal idea of someone performing oral sex on a man's penis, which is used metaphorically to suggest extreme obedience, groveling, or willingness to do anything for someone else. Historically, it was derogatory and insulting, aimed at mocking someone's subservience or low status. Today it remains vulgar and offensive, used mainly in informal, mocking, or aggressive contexts rather than polite conversation.