ELI5: Explain Like I'm 5

Bong

A bong is a special kind of device that people use to smoke stuff like tobacco or weed. It has a long tube that you put water in at the bottom, and a bowl at the top where you put the stuff you want to smoke.

When you light the stuff in the bowl with a lighter, you breathe in through the tube and the smoke goes into the water. This makes the smoke cooler and smoother to breathe in. Then you breathe in the smoke from the tube at the top, and it makes you feel funny.

But remember, only grown-ups should use a bong and it's not a toy!