funny money

funny money idiom
Counterfeit money; also, money from an obscure or questionable source. For example, The police warned storekeepers that some funny money was being passed around town. This expression probably endures because of its rhyme. [1930s]

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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