fonzaloon Share definition Flag A Rodney Dangerfieldism for a hot tub meaning "rich people farting under water" According to Rodney Dangerfield, Rich people invented the fonzaloon, after a lavish dinner party sitting together in a warm pool and farting under water fonzaloon by boldt August 30, 2012 0 0 Get merch Get the fonzaloon mug. Buy Now — $32.95 See more merch