shblum Share definition Flag Combination of three words 1) shit 2) blood 3) cum Achived during painful anal sex Harri D: " dude did you hear Gaynick gave john a shblum!!!" Thea: "yeah I know it was in my bed" shblum by GAYnick October 18, 2008 0 0 Get merch Get the shblum mug. Buy Now — $32.95 See more merch