脑子进水了

to be out of one's mind

→ 脑子
phrase Rare #23,661
to be out of one's mind An informal, insulting way to say someone is acting foolishly.
CH: 你脑子进水了吗?
EN: Are you out of your mind?

你脑子进水了啊

Are you out of your mind?

— 地球上的星星 (2007)

你们脑子进水了?

Are you out of your minds?

— 浪潮 (2008)

你脑子进水了

Are you out of your mind?

— Lost in Thailand (2012)

脑子进水了

Are you out of your mind?

— 美国黑帮 (2007)

你脑子进水了吗?

Are you out of your mind?

— 浪潮 (2008)

就是脑子进水了

They’ve simply lost their minds.

— 母亲 (2009)