keep a straight face
US /kiːp ə streɪt feɪs/
UK /kiːp ə streɪt feɪs/

1.
menahan tawa, tidak tertawa
to succeed in not laughing or smiling
:
•
It was hard to keep a straight face when he told that ridiculous joke.
Sulit untuk menahan tawa ketika dia menceritakan lelucon konyol itu.
•
She tried to keep a straight face, but a giggle escaped.
Dia mencoba menahan tawa, tetapi tawa kecil keluar.