be nuts about

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Related to be nuts about: go nuts

be nuts about (someone or something)

To be very passionate and enthusiastic about someone or something. I've seen the way Tim smiles at you—that guy is nuts about you! My daughter is nuts about sports—she's currently playing soccer, taking swimming lessons, and playing tennis.
See also: nuts

be nuts about (or on)

be very enthusiastic about or fond of. informal
1934 Dashiell Hammett The Thin Man She told me she had this job with Wynant and he was nuts about her and she was sitting pretty.
See also: nuts