put your thinking cap on
US /pʊt jʊər ˈθɪŋkɪŋ kæp ɑn/
UK /pʊt jʊər ˈθɪŋkɪŋ kæp ɑn/

1.
memutar otak, berpikir keras
to think seriously and creatively about a problem or challenge
:
•
We need to put our thinking caps on to solve this complex problem.
Kita perlu memutar otak untuk menyelesaikan masalah kompleks ini.
•
Okay everyone, put your thinking caps on, we need a new marketing strategy.
Baiklah semuanya, putar otak kalian, kita butuh strategi pemasaran baru.