CoochieBanana Share definition Flag A yellow substance, often thick, lodged in a womens cooch. Sometimes old mens erectional juice. O my god, I got slammed so hard last night by Mr. Mcgoo, now I have a coochiebanana! CoochieBanana by amandanikki123 November 24, 2011 0 0 Get merch Get the CoochieBanana mug. Buy Now — $32.95 See more merch