pump (one's) brain(redirected from pumping his brain)
pump (one's) brain
To fill or flood one's brain (with something). She just had a traumatizing experience, and shopping pumps your brain full of dopamine, so I'm not surprised she's been coping by buying everything that isn't nailed down. A: "Is there any chance I'll be able to pump my brain with enough facts on the French and Indian War to pass this test?" B: "If by 'this test' you mean the one that's next period, then no."
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