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eyes are bigger than one's stomach, one's

eyes are bigger than one's stomach, one's idiom

Someone wants more than he or she can handle, as in He's thinking of acquiring a third business, but we think his eyes are bigger than his stomach. This expression alludes to someone taking more food than he or she can digest. [Late 1500s]

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.