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
Others have been seriously injured, ranging from fractured skulls to bleeds on the brain, while one player at Walsall in League Two suffered concussions and seizures in an incident last season.
—
Daniel Taylor, New York Times, 17 Dec. 2025
The increase is due to caffeine's effect on the brain, which triggers a chain of events that causes blood vessels to narrow and systolic and diastolic pressure to rise for up to four hours or more.
—Md Published, Verywell Health, 8 Dec. 2025
Similarly, other vaccines may have a protective effect on the brain.
—Tom Gavin, EverydayHealth.com, 2 Dec. 2025
In a pilot study published in Scientific Reports, researchers found that GLP-1 agonists (which mimic the effects of GLP-1 compounds) slowed the speed at which alcohol enters the bloodstream, which also slowed effects on the brain.
—Scott Lafee, San Diego Union-Tribune, 25 Nov. 2025
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Daniel Taylor, New York Times, 17 Dec. 2025
The increase is due to caffeine's effect on the brain, which triggers a chain of events that causes blood vessels to narrow and systolic and diastolic pressure to rise for up to four hours or more.
—Md Published, Verywell Health, 8 Dec. 2025
Similarly, other vaccines may have a protective effect on the brain.
—Tom Gavin, EverydayHealth.com, 2 Dec. 2025
In a pilot study published in Scientific Reports, researchers found that GLP-1 agonists (which mimic the effects of GLP-1 compounds) slowed the speed at which alcohol enters the bloodstream, which also slowed effects on the brain.
—Scott Lafee, San Diego Union-Tribune, 25 Nov. 2025
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 19 Dec. 2025.
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