The official 2006 Darwin Awards have been given, and the winner is a couple of friends from FloriDUH. Quoting from the official press release:
When one breathes helium, the lack of oxygen in the bloodstream causes a rapid loss of consciousness. Some euthanasia experts advocate the use of helium to painlessly end one’s life.
The pair pulled down the 8′ balloon, and climbed inside. Their last words consisted of high-pitched, incoherent giggling as they slowly passed out and passed into the hereafter.