This $500 gravity bong is a grown-up way to get wrecked The term "gravity bong" can be a bit of a dirty word in the cannabis world. No more with the Stündenglass Gravity Hookah.To get more news about big bongs for sale, you can visit sharebongs.com official website. For those who didn't spend a hazy evening of their youth with their head in a 5-gallon bucket, a gravity bong, or...