biss Share definition Flag Short for bitch ass kiss. When you kiss someone, your lips should only gently touch, without the "mwah" sound. And it goes without saying that you cannot include tongue. Girl: "Babe, biss?"Guy: "Okiee" *Girl and guy have a gentle but loving biss* biss by newbussy December 9, 2023 0 0 Get merch Get the biss mug. Buy Now — $32.95 See more merch