call someone's bluff
US /kɔl ˈsʌm.wʌnz blʌf/
UK /kɔl ˈsʌm.wʌnz blʌf/
1.
揭穿某人的虛張聲勢, 挑戰某人
to challenge someone to prove that what they are saying is true, or to show that they are not afraid to do something that they have threatened to do
:
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She threatened to quit, but I decided to call her bluff and see if she would actually do it.
她威脅要辭職，但我決定揭穿她的虛張聲勢，看看她是否真的會這樣做。
•
The politician made a bold claim, and the journalists decided to call his bluff by demanding evidence.
這位政客發表了一個大膽的聲明，記者們決定通過要求證據來揭穿他的虛張聲勢。