1SK Share definition Flag 1 Shot Kill "holy shit this 1SK bitch is raging our servers and keeps getting 1 shot kills" or "fuck this bitch, every time i am killed by him its a 1 Shot Kill" 1SK by LBIVLIFE October 9, 2008 0 0 Get merch Get the 1SK mug. Buy Now — $32.95 See more merch