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
Recent Examples on the Web
How to wind down Evidence suggests that mental relief comes not from adding new coping strategies, but from reducing the number of demands placed on the brain.
—
Robin Pickering, The Conversation, 21 Jan. 2026
All of these thinking and behavioral patterns are caused by the effect of Huntington’s disease on the brain.
—Heidi Moawad, Verywell Health, 19 Jan. 2026
California has billionaires on the brain.
—Los Angeles Times, 18 Jan. 2026
Already have summer vacation on the brain?
—Daisy Maldonado, InStyle, 14 Jan. 2026
See All Example Sentences for on the brain
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Robin Pickering, The Conversation, 21 Jan. 2026
All of these thinking and behavioral patterns are caused by the effect of Huntington’s disease on the brain.
—Heidi Moawad, Verywell Health, 19 Jan. 2026
California has billionaires on the brain.
—Los Angeles Times, 18 Jan. 2026
Already have summer vacation on the brain?
—Daisy Maldonado, InStyle, 14 Jan. 2026
See All Example Sentences for on the brain
Cite this Entry
“On the brain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/on%20the%20brain. Accessed 28 Jan. 2026.
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