Gravity bong

A bucket bong (or "buckie") is a method of consuming cannabis particularly popular in Australia, New Zealand and the United Kingdom. Despite the name, the technique is only similar to a bong in that it involves the use of water as a coolant. However the smoke in a bucket bong never actually passes through the water as it would in an ordinary bong. Users cut the bottom from a large bottle and fashion a gauze from tin foil in place of the lid. The bottle is then immersed in a bucket of water such that it is mostly full of water. Cannabis or a 'premix' of cannabis and tobacco is then burnt on the gauze, and the bottle slowly raised out of the bucket. The bottle is not fully removed, to ensure the seal formed by the water is maintained, and the resulting low air pressure inside the bottle causes it to fill with cannabis smoke through the gauze. When the bottle is full of smoke the gauze is removed and the user puts their mouth around the neck, pushing the bottle into the water and forcing all the smoke into their lungs. A bucket provides a very powerful dose of THC and is enough to last a long time. Whilst the initial sensation is very harsh, buckets are actually a cleaner and more efficient way of consuming marajuiana than smoking joints. There is no paper, with the associated impurities, tobacco is optional and the user receives a much higher percentage of the overall smoke produced.

The book Warp Drive: Australian Drug Stories edited by Leonie Stevens has an entire chapter devoted to the bucket bong and its associated social rituals in Australia.