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To challenge someone to prove their claims or threats are genuine, often to expose them as false or empty.
When the employee threatened to quit, the manager called their bluff and asked for a resignation letter.
The manager challenged the employee's threat by asking for proof.
She called his bluff by asking him to put his money where his mouth was.
She challenged him to back up his words with action.
Often used in situations where someone is making a bold claim or threat but may not follow through.
Use this phrase when you suspect someone is making a false or empty threat or claim.
Do not use this phrase if you are unsure whether the person is bluffing, as it can escalate conflict.
Originates from poker and gambling, where bluffing is a strategy to deceive opponents about the strength of one's hand.
Common in informal contexts, especially in negotiations, debates, or social interactions where someone is suspected of making false claims.