Tostin Share definition Flag Slang for coochie in spanish. Lambeme la tostin. Los hombres le gusta comer tostin. Lavate la tostin con javon. I shaved my tostin this morning. Tostin by Heidy Garcia-Robinson June 17, 2006 0 0 Get merch Get the Tostin mug. Buy Now — $32.95 See more merch