fat chance

fat chance idiom
Very little or no possibility, as in A fact chance he has of coming in first, or You think they'll get married? Fat chance! A related expression is a fat lot, meaning “very little or none at all,” as in A fat lot of good it will do her. The first of these slangy sarcastic usages dates from the early 1900s, the second from the 1890s.

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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