An effect caused by smoking a seed in a
bowl(as in the bowl of a pipe,bong,zong,hooka,etc) where the seed explodes because it gets so
hot when you are lighting the bowl-o-weed. This happens most commonly when you are smoking shake,shitty weed,or when you get skimped on a bag of weed by your dealer.
(For the slower
people, its short for dank explosion and when you say it abbreviated it makes an "s" sound, not an "x" sound)