i presume this is just to save time because it 'pours' the beer faster, but surely it would cost a lot of money to have those special cups? and considering the only time you would need a beer to be poured that quickly would probably be at a huge event like a baseball game or a concert, you would need hundreds of them. i dont see how it could be cost efficient at all.
do not trust. would not use. plus, who the fuck drinks bud light.