前段時間，一位美國有爭議的作者Ann Coulter來伯克萊(Berkeley)演講，遭到校方拒絕，並提出了一些條件。Ann 在接受Fox電視臺訪問時說：
Coulter said she “called their bluff” by agreeing to rules set by the university seeking to prevent violence. 她挑戰大學，答應他們的條件，看他們怎麽辦。
call someone’s bluff (to expose a person’s deception; challenge someone to carry out a threat) 揭穿對方，挑戰對方。等於我們常說的“你少來，有本事做給我們看。”
以前是打牌用語，後來進入到日常口語，成爲非常有用的俚語。
例句：
- He always said he would quit, so we finally called his bluff. 他動不動就說要辭職，後來我們就順水推舟同意了。（其實他並不是真的想走，只是想提條件）
- All right, I’ll call your Bluff. Go ahead, do it! 好吧，別光說，有本事來啊！
- He always bragged about his wealth, so we called his bluff and asked him to pay for the meal. 他總是炫耀自己的財富，我們忍無可忍，對他說，你那麽有錢，請把晚餐費用付了。