a cool thing to do with the gravity bong is after you fill it up with smoke, instead of inhaling on the way down, put your mouth on it, push it down until the water level around the bottle is a little ways down from the mouth peice, and then hit it... It's one hell of a shotgun hit.
opiuser Reviewed by opiuser on . Huge problem Okay, so I don't have a bowl anymore and I want to try and make a gravity bong, BUT, I have a huge problem. I don't know how to make anything to smoke out of and I'm low on supplies. I got this idea of someone on this board: 1. Take a 2 liter bottle and cut the bottom off. 2. Find a 5/8 size socket wrench head and use it for the bowl. Put screen into it and it fits perfectly into the top of a coke bottle. 3. Fill up a large sink, tub, or bucket with water. Rating: 5