SMKL Share definition Flag Acronym: Smacking My Knee Laughing Guy A: Why didn't the skeleton go to the party? Guy B: Why? Guy A: Because he had no body to go with! Guy B: SMKL!! SMKL by smkl September 27, 2011 0 0 Get merch Get the SMKL mug. Buy Now — $32.95 See more merch