Nidiot Share definition Flag A drunken mispronunciation of 'idiot' made by Finnish rockstar and leadsinger of the band HIM, Ville Valo, while arguing with skater and jackass star, Bam Margera. Bam: Fucking douche Ville: Fucking nidiot Nidiot by backpackk April 12, 2010 Get the Nidiot mug.