NGG Share definition Flag A word used to describe revolt or disgust, pronounced how it is spelt. Also when pronounced the mouth is moved around in awkward positions. "I just ate a toenail i found on my floor amidst litter and crap" "ngggg" NGG by dannyb26 August 23, 2009 0 0 Get merch Get the NGG mug. Buy Now — $32.95 See more merch