Top Definition
Acronym for "Nice Idea Didn't Work" pronounced "nid-we"
person 1: Lets tie kroger bags to our shoulders and jump off the tree and see if it works as a parachute!!!

Person 2: Okay *THey go and jump offf*

Innocent bystander: wow...NIDWI
by giggles the loler November 02, 2009
5 Words related to NIDW

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