wipe the smile off someone's face
US /waɪp ðə smaɪl ɔf ˈsʌm.wʌnz feɪs/
UK /waɪp ðə smaɪl ɔf ˈsʌm.wʌnz feɪs/

1.
让某人笑不出来, 挫败某人的得意
to make someone stop feeling happy or confident, often by doing something unpleasant or by revealing an unpleasant truth
:
•
Winning the championship will really wipe the smile off their face.
赢得冠军真的会让他们笑不出来。
•
The bad news quickly wiped the smile off her face.
坏消息很快就让她笑不出来了。