Why? We don't know. The makers of 'Chambong' say that it's awesome but it doesn't seem like they've done any studies that substantiate that claim. If you're wondering how it even came about, we do have the answer to that one according to their website:
The origins of the first Chambong came about in early 2014, during a moment preempting the Super Bowl. We had an epiphany the week prior of the big event to create a “Super…Bowl.” The resulting device of our imagination harnessed an ability to hold an extraordinary amount of cannabis, however was sadly non-functional as a smoking apparatus. Fortune would prevail several evening later, while onlookers examining the piece remarked at how it looked like a fantastic wine “shooter”. They promptly filled it with Champagne and experienced the resulting magic…And thus was born the glory that is — The Chambong.
And their reviews are pretty good/weird.