fly off the handle

fly off the handle idiom
Lose one's temper, as in Tom flies off the handle at the slightest setback. This metaphoric expression alludes to the loosened head of a hammer flying off after a blow. [Early 1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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