Ok let me throw some insight on how to really hit a gravity bong and the science behind how it works. First off a gravity bong uses water pressure to pull heat into the bowl as your toasting it. You can easily snap a bowl if you dont watch it, which in turn will put you into another D. Ok so the first step in making one of these goes with whatever jug, bottle you like. Remove to bottom( i like to have about a little more than 2/3rds left. With the cap make a pinki size hole. Put a slider in the hole, or a socket, or a pen tube, or just a foil bowl. That depends on what you like to use. Submerdge the bottle before you have the cap on, unless you want wet weed. You then place the cap which has your weed on. Light the bowl and as your lighting pull the bottle up. When the amount of smoke you like is in you remove the cap place mouth on and push the bottle into the water. This is the best way as the smoke will get deep into your respiratory system. This is better than sucking in the smoke. For a quick anatomy lesson. When smoke is forced rather than sucked it gets deep into your lungs, hell it gets in your respiratory system. This just makes the high crazy. Good luck and remember to have fun.

A wrench cap shoved in a melted water bottle cap screwed on to a water bottle that’s pulled out of a big cup of water. Used to smoke marijuana

A bong that uses a bucket, a bottle, and a pipe. You smoke it using air pressure, and can take enormous hits because of its design, easily.

a gravity bong is a home made pipe that is designed to use the force of gravity to pull weed smoke into the chamber, usually using water as the means for drawing the smoke down into the chamber.
1.) take any plastic bottle or jug, poke some holes in the bottom of the bottle or jug,
2.) create a foil bowl to fit inside of the bottle opening,
3.) get a bucket or anything the bottle will fit inside and fill the bucket with water,
4.) put the bottle or jug inside the bucket fully submereging the bottle in the water, up to the opening of the bottle (the bucket is filled with water at this point),
5.) put the foil bowl on top (the bowl is filled with weed at this point),
6.) light the weed and draw the bottle up, watch the water pull the smoke into the bottle, make the smoke as chalky as you desire, then when the bottle is almost completly empty of water and full of smoke, take the bowl off and suck the smoke in, at the same time the bottle should start filling back up with water as you are sucking in the smoke.
then if you really want to get high use the bottle as a respirator breathing into and out of the bottle until there is no smoke left.
the gravity bong is the best way to get 4 people off their gord with only a small amount of weed because of the enormous hits this device can generate, this is by far one the more superior means of getting high off a tiny amount of weed

A device that is simple to to make easy to use and deffinitely gets you the most ripped out of anything.

Items need: bottle of choice, bong slider in cap of choice that fits bottle, good sized bucket that the bottle fits into (buy a brand new sterilite trashcan from walmart they work the best).

MAN YO MOUF GET DRY THO!

The only way to get fuckin baked. None of you posers even smoke dope.A real grav is made from a 3 liter, with a metal socket in the top for the bowl head. There is an art to pulling up one of these beauty's and takes practice to pull up a nice chalker. If you pull it to slow or let air in it(pull it up out of the water and 'gurgle' it) it'll taste stale as shit. The best thing about gravs is scraping the grams of resin from the inside after a couple z's have been cashed in it. If you get shit tooth from a hit,(resin on your teeth from suckin in the smoke) then thats a good hit.

GET BAKED.

note: A trumpet mouth-piece works very well for a gravity bong bowl, it fits perfectly in the opening of a 2 liter bottle.

take a 5 gallon water tank with the bottom cut off and a 8 gallon tank with the top cut off fill the 8 gallon water tank with water fully submerge the 5 gallon water tank into the 8 gallon water tank add tin foil to the top of the 5 gallon water tank fill the tin foil with your choice of weed and as much as you desire then light the weed and slowly very slowly pull the 5 gallon water tank up till there is about no water left in the tank at all and when you see that there is really no air left in the 5 gallon tank remove the tin foil and put your mouth over the opening and eaither really slowly or really fast your choice suck in the smoke and get blazed off your ass

THAT SHITz THA BOMB NIGGA FRY!!!!!