Definition & Meaning of "fuck whistle"in English

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

"fuck whistle" is a vulgar slang insult that likely arose in late 20th–21st century English, combining "fuck" as an intensifier with "whistle," used metaphorically to suggest someone trivial, annoying, or worthless. The imagery implies that the person is loud, irritating, or of no real value. It appears primarily in informal speech, online banter, and comedic or hostile insults to ridicule or demean someone. The term is highly derogatory, crude, and never neutral.