Bong

A bong is usually a glass, ceramic, or plastic hollow object that is used to smoke cannabis flowers, herbal extracts, or tobacco. A bong, similar to a hookah, filters smoke through water to reduce the heat of the smoke before it is inhaled. In its simplest form, a bong consists of a bowl and a stem, but as the complexity and artisanship increases and the bong becomes more sophisticated, ash catchers, ice holders, and percolators may be incorporated.