High Quality Content by WIKIPEDIA articles! A bucket bong, or gravity bong, is a method of consuming cannabis or other smokable substances. The bong is made using a plastic bottle, a container that can hold both the bottle and water, a brass cut nozzle, and an aerator screen. The bottle`s bottom is cut, and after packing the bong`s bowl, the bottle is inserted into the water and the bowl is lit while the bottle is slowly lifted up. Smoke will develop in the bottle and will enter the smoker`s body when their mouth is on the opening and they breathe in. The waterfall bong is made using similar things and is smoked similarly.