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1.
adjective; Small, of little or no consequence compared to other objects,ideas or sentiment.
He blew a grand in Atlantic City? That's mice nuts compared to what he dropped in Vegas!
by The 8th best man. June 11, 2006
 
2.
Small or insignificant amount. See Mice Nuts
Don't sweat the small stuff or don't sweat the micenuts.
by BillZeil May 07, 2007