on the brain

idiom

informal
: always in one's thoughts
I've had pizza on the brain all day.
He's got sex on the brain.

Examples of on the brain in a Sentence

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Medics rushed him in critical condition to Brookdale University Hospital with bleeding and swelling on the brain, according to court papers. Thomas Tracy, New York Daily News, 26 Feb. 2026 The new study sheds more light on air pollution’s influence on the brain. Miriam Fauzia, Dallas Morning News, 19 Feb. 2026 Their effects on the brain and the nervous system vary from substance to substance because of chemical differences between them. Erica Rex, STAT, 19 Feb. 2026 The point, according to White, is to use music’s transformative effects on the brain to design therapeutic activities that improve cognition and motor skills while increasing social and life skills for clients with developmental disabilities. Reylee Billingsley, AZCentral.com, 7 Feb. 2026 See All Example Sentences for on the brain

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“On the brain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/on%20the%20brain. Accessed 3 Mar. 2026.

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