eat somebody's lunch
eat (one's) lunch
slang To defeat one. I've been practicing really hard because I refuse to let my nemesis eat my lunch again.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
eat somebody’s ˈlunch(American English, business) take away another company’s business or their share of the market: Unless we’re careful, foreign competitors will eat our lunch.
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