laugh up your sleeve
US /læf ʌp jʊər sliːv/
UK /læf ʌp jʊər sliːv/
1.
속으로 웃다, 몰래 웃다
to be secretly amused about something, often at someone else's expense
:
•
She tried to keep a straight face, but I could tell she was laughing up her sleeve.
그녀는 정색하려고 했지만, 나는 그녀가 속으로 웃고 있다는 것을 알 수 있었다.
•
The politician pretended to be concerned, but everyone knew he was laughing up his sleeve at the public's gullibility.
그 정치인은 걱정하는 척했지만, 모두가 그가 대중의 순진함에 속으로 비웃고 있다는 것을 알았다.