push the panic button

push the panic button idiom
Also, press the panic button. Overreact to a situation, as in Don't worry; Jane is always pushing the panic button, but I'm sure the baby's fine. This term originated during World War II, when certain bombers had a bell-warning system so that the crew could bail out if the plane was severely hit. Occasionally a pilot would push the button in error, when there was only minor damage, causing the crew to bail out unnecessarily. By 1950 the expression had been transferred to other kinds of overreaction.

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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