have something on the brain
成語所屬單字brain
have something on the brain — 慣用語
1. To think about something constantly, often in an annoying way.
1.慣用語
釋義
滿腦子都是
To think about something constantly, often in an annoying way.
例句
Diego has video games on the brain and talks about them nonstop.
Why do you have money on the brain all the time?