When he walks into the lake he turns it into koolaid, and the children who drank the "kadaj-aid" were on such a sugar high that they were leaping around into clouds way... then later they crashed and went into "sugar coma" during the whole Bahamut thing... and finally he dissolves in the rain... like the sugary goodness he is.
...also if you drink Moutain dew out of a black box you turn into sephiroth...
...look into it ::nods::
Ima go drink some grapey koolaidey moutain dew.
(for future reference now I am, and I swear to god I will, going to offer someone a glass of Kadaj)