Slag Slayer Share definition Flag Someone who kills slags for fun and for a better world without slags! Jordan: " Hey! I see a slag slayer. Run Katy run!!" Slag slayer: " I'm gonna get that slag!" Slag Slayer by Jeddie August 20, 2008 0 0 Get merch Get the Slag Slayer mug. Buy Now — $32.95 See more merch