Nish Nash Share definition Flag A worthless snivelling cunt of a person. The nadir of humanity. The kind of person who gives society a bad name with their complete and total lack of both class and value. I swear to God, he's such a fucking Nish Nash! Nish Nash by Cunny March 18, 2004 0 0 Get merch Get the Nish Nash mug. Buy Now — $32.95 See more merch