Bongs are a sealed chamber half-filled with water used for smoking. A bong has a pipe with a bowl on the end that goes into the chamber under the water level. It has another pipe with a mouthpiece on the other end enters the chamber and stays above water level. The bowl is used to place tobacco, which on being lightened is inhaled on the mouthpiece. As the smoke enters the chamber through the water the smoke cools down and is filtered by the water.
Though a bong seems similar to a water pipe it’s feeling very different. With a water pipe, one slowly draws the smoke through a hose and water whereas with a bong the smoke passes the water very quickly and enters into your lungs.