I call this the waterfall: you'll need a 2 liter bottle, some aluminium foil and some tape. First, punch a 1/2 inch hole in the bottom of the 2 liter. Next, tape that sucker up. Now fill the bottle up with water. Now make a little bowl out of the foil and punch a whole bunch of little holes into it. Fit the bowl tight over the mouth of the bottle. Pack a bowl.

Now comes the tricky part.. lighting the bowl. Bring the flame to the weed for about 2-3 seconds, until it starts to light. Now, slowly take the tape off the hole. Don't tear it all the way off at first, let the flow come slowly, all the while keeping the fire on the bowl.

As the water runs out of the bowl, it sucks all the smoke into the bottle. You can thank gravity for getting you so high right now. Be careful, taking your first drag off one of these puppies is quite an experience. Enjoy!