An entertaining parody (in PDF form…) “If you’re buying Perrier or Poland Spring or any of those other bottled waters, what you’re drinking has actually been in the ground for thousands (if not millions!) of years. That is hardly what we would call fresh water!… We gather only the finest individual hydrogen and oxygen atoms and combine them (two parts hydrogen to one part oxygen, of course!) in our state-of-the-art hydrogen-oxygen bonding facility..”
Also see Dihydrogen Monoxide – a warning about the effects of DHMO.
