Stinky Nincky Share definition Flag An evil person, who is a combination of nincompoopish and smelly. Ella is a Stinky Nincky because she hates everything and hasn't bathed for 3 months. Stinky Nincky by leahbox11 June 15, 2009 0 0 Get merch Get the Stinky Nincky mug. Buy Now — $32.95 See more merch