All you need is a plastic bottle - 2 litter bottles work well.
The Waterfall bong is a variation of the gravity bong, and therefor you will find it very similar to the Gravity Bong.

  Step 1
Plastic bottle with a hole in the bottom

Plastic bottle with a hole in the bottom about the width of a pencil.

Step 2
Cap to Plastic BottleThe top to the plastic bottle. Cut a hole in the middle of  the cap.                    
 

Step 3
Tin foil

Tin foil enlarged

Poke holes in the tin foil with a needle. Then place the tin foil inside the hole in the cap. Make sure you leave a little cup for the weed to sit in

 

 *note: for those of you who dislike using aluminum for your bowl piece, you can use a metal bowl or anything else you can think of, but since many of you don't have a bowl piece I have put the tin foil design down since everyone can do it. Just make sure whatever you use that it is sealed good so no air can get though and it should work  fine.

  Now you're done with the making of the waterfall bong, time to learn how to use it...
 

 How to smoke it:
Step 1Setting up the bong
Put your finger over the hole  at the bottom while you fill the bottle with water from the top.

Next screw the cap with the bud packed inside it, lightly on the bottle.

Step 2
Sparkin the weed!
Light the weed and and remove your finger from the hole. As the water rushes out it will pull the smoke in from the top.

 

Step 3
HOLY SHIT, look at all that smoke!

BAMM...LOOK AT ALL THAT SMOKE.

Next, unscrew the cap. Be careful, it's probably hot. You can put a rubber band around it so it's easier to remove.

Step 4
hey man, why you pointing at muh bitch!!DAMN NICE HIT. WAY TO GO GIRL.

Now you have yourself a bottle full of compressed smoke. Simply put your mouth over the top of the bottle (with no cap) and suck.

 

PERSONAL TIPS

  1. Have a bucket ready to catch the water, or do this over a bathtub or sink, or simply do it outside.
  2. and again something I already mentioned but a thick rubber band around the cap makes it easier to remove the cap, and never screw the cap on all the way. It's a bitch to get it off when it's time for your hit.
  3. Back to bongs