Grasshopper

Noun / Cockney Rhyming Slang

Grasshopper is a Cockney rhyming slang term for the police. It comes from “Grasshopper and Copper,” where “Grasshopper” rhymes with “Copper,” a colloquial term for police.

Example: “Watch out for the grasshoppers around here”
Means: “Be cautious of the police around here.”

Example: “He got nabbed by the grasshoppers”
Means: “He was caught by the police.”