Of course its not for real.. it's just another snarky parody thread from those who don't know how to discuss or debate anything intelligently. It's just a thread created as an excuse to throw around thinly veiled personal attacks. (remember the cosplay threads?)
The topic is based on an urban myth about a boy who won a science fair about the "dangers of dhmo" which, of course, is water.
http://www.snopes.com/science/dhmo.asp