United StatesEnglish colloquialslangcolloquialthreatening
A threat or warning asserting that people who inform authorities or betray a group will be physically assaulted or otherwise harmed as punishment for informing.
2.
general Englishcolloquialjocular
A hyperbolic or facetious admonition used to discourage tattling or complaining, often employed playfully rather than as a literal threat.