play the fool

US /pleɪ ðə fuːl/
UK /pleɪ ðə fuːl/
"play the fool" picture
1.

装傻, 扮小丑

to behave in a silly or foolish way, often to entertain others or to avoid responsibility

:
Stop playing the fool and take this seriously.
别再装傻了,认真对待这件事。
He was always playing the fool to make his friends laugh.
他总是装傻逗朋友们笑。