Mulch- KOing Butler

  Dwarf digestion, due to its accelerated rate, can be quite explosive.

  The loosely packed soil on the Fowl estate was very well aerated and a lot of that air had entered Mulch's tubes along with the soil and minerals. Now the air wanted to get out.
...
  Then things came to a head rather rapidly. The shock that Mulch had experienced communicated itself to his bowels, and they decided the excess air had got to go. Mulch knew the symptoms. Jelly legs, bubbling cramps, wobbly behind. In the seconds remaining to him, he snatched the object from the safe and, leaning over, he clasped his knees for support.

  The constrained wind had built itself up to mini-cyclone intensity and could not be constrained. And so it exited. Rather abrasively. Blowing open Mulch's bum-flap and slamming into the rather large gentleman who had been sneaking up behind him.
...
Well, to be honest, Butler wasn't quite sure what it was. If he didn't know better, that is at first glance, he could have sworn that the thing resembled nothing more than an enormous quivering…

  And then the thing exploded, jettisoning an amazing amount of tunnel waste directly at the unfortunate manservant! It was like being battered with a hundred sledgehammers simultaneously. Butler was lifted bodily and flung against the wall.

  And as he lay there, consciousness slipping away from him, he prayed that Master Artemis hadn't managed to capture the moment on video.

-Artemis Fowl, Chapter 7