Kachoonablast Share definition Flag When you sneeze or cough and unexpectedly, simultaneously flatulate. Between that baked bean salad and the pollen count I nearly kachoonablasted a hole in my pants. Kachoonablast by AmadeuS469 June 20, 2016 0 0 Get merch Get the Kachoonablast mug. Buy Now — $32.95 See more merch