Maybe, I think heavy-rock dudes tend drink a lot of beer, which has some ingredients known to cause a stomach to act on it's own and make some people spray out liquid'ish substances from the both ends simultaneously...
That might also be caused by a too strong coffee used to help people stay awake while waiting for the real music to begin, as the bands just keep bashing their instruments furiously and roaring like a bear to cause some unmusical noises to come out from the speakers... Those ridiculously awkward looking trans-metro-sexual men with long hairs, makeups and black clothes tend to call it music thought...
:yoda: