Bong

A bong is a filtration device used for smoking, typically cannabis or tobacco, that uses water to cool and filter the smoke before it is inhaled.

Most bongs consist of a water-filled chamber, a downstem connected to a bowl where the material is combusted, and a mouthpiece. When lit, smoke passes through the downstem into the water, forming bubbles that carry the smoke to the user.

Designs vary widely. Common forms include straight-tube and beaker-base models, as well as multi-chamber rigs with percolators, diffusers, and ice catchers. Glass is the dominant material in contemporary manufacture, with silicone, acrylic, ceramic, and metal also used.

Origins of the term bong are uncertain, but the modern device gained popularity in the 20th century, especially in North America and Europe, as glass-blowing advances led to varied shapes and filtration features.

Use and maintenance: fill the chamber with water to a level that submerges the downstem, pack the bowl, light, and inhale through the mouthpiece. Clean with isopropyl alcohol and salt; rinse thoroughly. Avoid cracked or overheated pieces.

Legality and health: legal status varies by jurisdiction, and possession or use may be restricted to adults. Smoking carries health risks, and water filtration does not eliminate those risks. Sharing devices can also pose infection concerns.