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
Leg muscles and the metabolism Another point that has received increasing attention in recent studies is the influence of leg muscles on the metabolism—and thus, indirectly on the brain.
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Desireé Oostland, Vogue, 8 Jan. 2026
Ritalin and Adderall don’t act on the brain’s attention circuitry, a study found.
—Mark Johnson, Washington Post, 6 Jan. 2026
In August the Cleveland Clinic published an article on its website listing the many benefits of music on the brain.
—Michael Maguire, Boston Herald, 4 Jan. 2026
Meanwhile, Tommy also has oil on the brain, negotiating the fine print of a high-stakes loan with cartel boss Gallino (Andy Garcia), the financial backer behind the offshore project.
—Samantha Stutsman, PEOPLE, 21 Dec. 2025
See All Example Sentences for on the brain
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Desireé Oostland, Vogue, 8 Jan. 2026
Ritalin and Adderall don’t act on the brain’s attention circuitry, a study found.
—Mark Johnson, Washington Post, 6 Jan. 2026
In August the Cleveland Clinic published an article on its website listing the many benefits of music on the brain.
—Michael Maguire, Boston Herald, 4 Jan. 2026
Meanwhile, Tommy also has oil on the brain, negotiating the fine print of a high-stakes loan with cartel boss Gallino (Andy Garcia), the financial backer behind the offshore project.
—Samantha Stutsman, PEOPLE, 21 Dec. 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 11 Jan. 2026.
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