Go and fly, you SOUR banana! Share definition Flag A come back after you've been insulted by a dirt wag. Person 1: "You're SUCH a dirt wag!!" Person 2: "No I'm not! Go and fly, you SOUR banana!" Go and fly, you SOUR banana! by Labba Labba December 5, 2010 0 0 Get merch Get the Go and fly, you SOUR banana! mug. Buy Now — $32.95 See more merch