I drew this for Alterflane on a particularly hot day. While staying hydrated was definitely his goal, i'm fairly sure that turning into a Vaporeon wasn't on his to do list for the day. But then again, perhaps he should know better than to drink out of science glassware by now.
Link
Alterflane
It's tricky to remember that shop-bought drinks aren't served in science lab flasks when this sort of thing happens quite often.