Most likely guess is some kind of indoor plumbing, or perhaps something electrical.
Kynn got his start in mudding ages ago, when he bailed from IRC and ended up on PegasusMUCK, where he was given a MUCKer bit. He first encountered Tangent back on Ancient Pern, before the minesong was ever sung. Things Kynn does Kynn's job keeps him busy MUSHing all night, and it's all Z's fault. In his spare time, Kynn plays a gazillion characters on twenty thousand different tinymuds, gets in flamewars on scattered newsgroup, collects comics, runs LegionMUSH and DawnSistersMUSH, and ticks off wizards on Pern. His favourite colour is blue.