dine out on

dine out on idiom
Be invited to dinner because of something one knows about and can discuss. For example, “In a couple of years you will be dining out on this murder” (Ngaio Marsh, A Man Lay Dead, 1934). [First half of 1900s] Also see eat out; sing for one's supper.

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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