All bongs deserve love, but this article is all about gravity bongs, a truly special way to get toasted. You don’t need to have passed high school physics to use one, but there are some mechanics at work that you should know. Just like using a regular bong, you need to learn how they work, and maybe you’d like to know how to make one at home. It’s all below, guys.

What’s a Gravity Bong Again?

A gravity bong, lovingly referred to as a “grav” or “bucket bong” or “GB” or “geeb,” is a type of bong that uses air pressure and water to build smoke. That means you don’t have to pull the hit; the bong pulls it for you, so you can take a massive rip all at once. It’s sort of like taking three or four robust bong hits simultaneously, so it’s a lot on your lungs. And your head. And your sanity. But

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