funzinoon Share definition Flag pronounced fun-zee-noon. When a person farts in the bathtub and bites the bubbles, they are a funzinoon. Mom...Little Jimmy is in the bathroom being a funzinoon again. funzinoon by SinisterPrime February 12, 2014 0 0 Get merch Get the funzinoon mug. Buy Now — $32.95 See more merch