play the fool
Verb
Meaning
(idiomatic) To behave in a foolish or comical manner.
(idiomatic) To pretend/feign ignorance.
Source: en.wiktionary.orgSynonyms
Examples
At times discretion should be thrown aside, and with the foolish we should play the fool.
No man is so much a fool as not to have wit enough sometimes to be a knave; nor any so cunning a knave as not to have the weakness sometimes to play the fool.
It's shameful to spot a lie and not to name it, shameful to name it and then to shut your eyes, shameful to call a funeral a wedding and play the fool at funerals besides.
He is not a wise man who cannot play the fool on occasion.
In life, each of us must sometimes play the fool.
It takes great wisdom to play the fool.