Balloon Knot Slap Share definition Flag Being hit in the face with a tied used condom full of semen. Hey Pete, I can't believe your dad balloon Knot Slapped me last night! Balloon Knot Slap by Toneage February 17, 2020 0 0 Get merch Get the Balloon Knot Slap mug. Buy Now — $32.95 See more merch