the brains of the/this/that operation

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the brains of the/this/that operation

The primary organizer of something. I doubt Jim and John had anything to do with the break-in. I bet you Tyler was the brains of the operation—those boys are just his toadies. You think it's a terrible idea? Well, who's the brains of this operation, you or I?
See also: brain, of, operation, that, this
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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