It already has been investigated, it didn't work. And I was just saying that its a myth, I wasn't saying it was labled as such, just hoping someone on this board will understand that being 'On' is not contraceptive. What they are looking into now is a fascinating drug called MENT. Its 4x as suppressive as natural testosterone, but 10x as anabolic. Check it out:
http://bodybuilding.com/fun/catment.htm
I had some other links too but I can't think of any off the top of my head. Its been investigated for some time now, the fact that they (Organon is the company currently investigating male birth control) haven't gotten approval for a human test this late in the game means its probably not to be....