Definition & Meaning of "cockmuncher"in English

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

"cockmuncher" is a slang insult that appeared in English in the late 20th century, combining "cock" (a vulgar term for the penis) with "muncher" to create a crude, graphic metaphor for a contemptible or despicable person. The term is used primarily in informal speech, online exchanges, and comedic or aggressive insults to express strong disdain. It is highly derogatory and vulgar, with no neutral usage, intended to shock, humiliate, or ridicule.