gybungo Share definition Flag The cross between the word "Giant" and the word "jumbo". It means larger than everything. Whoaa, Her booty is gybungo! That Dude's house is Gybungo! He must be ball'n. gybungo by ulys August 5, 2007 0 0 Get merch Get the gybungo mug. Buy Now — $32.95 See more merch