Nemmett Share definition Flag A person with no spacial awareness, walks into just about everything, also really tired. man walks into a table: "OMG I just did a Nemmett."Someone watching: "He just did a Nemmett" Nemmett by Pauly Pilot November 14, 2010 0 0 Get merch Get the Nemmett mug. Buy Now — $32.95 See more merch