Definition
Used to express disbelief or to indicate that what someone has said is unreasonable or absurd.
你在開玩笑吧（表示不同意或覺得属荒謬）
"You expect me to finish all this work today? You're having a laugh!"
"你希望我今天完成所有工作？你是在開玩笑吧！"
"They're asking $1000 for this old sofa? You're having a laugh!"
"他們要價1000美元買這張舊沙發？你是在開玩笑吧！"
"He says he’s never made a mistake. You’re having a laugh!"
"他說他從未犯過錯。你是在開玩笑吧！"