grind (someone's) gears(redirected from grind their gear)
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grind (someone's) gears
To greatly or specifically irritate or annoy someone. It really grinds my gears when cyclists go zipping through red lights! John's not a bad guy, but he has a habit of grinding people's gears with his political rants.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.