a light bulb goes off in (one's) head

(redirected from light bulb going off)

a light bulb goes off in (one's) head

One is suddenly struck with an ingenious or inspired idea, insight, or revelation. In this expression, the phrasal verb "go off" means "turn on" or "become active." We spent hours trying to come up with a solution, when suddenly a light bulb went off in my head. I kept feeding him subtle hints about the truth of the matter, waiting for a light bulb to go off in his head.
See also: bulb, goes, head, light, off
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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References in periodicals archive ?
Michigan State University neuroscientist Jeremy Gray suspects there's a lot of hard work going on in the brain even when the proverbial light bulb going off feels effortless.
It was like a huge light bulb going off in my head."
But, like a light bulb going off in my head, I came up with this crazy idea that I should make Christmas stockings for my daughter and two sons.
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