Diagram:                  ____
                          \  / <)))))) bowl
                           ||
                          /  \
                         /    \
                     |  /      \  |
   water line )))))> |^/^^^^^^^^\^|
                     | |        | |
                     | |        | |
                     | |        | |
                     | |        | |
                     \____________/

        Start with a 3 liter bottle of your favorite drink.  Drink
it.  Get a 2 liter bottle of another drink.  Drink it.  Cut the
top off of the 3 liter using an exacto knife, right where
it starts to slant up. Throw out the top. Cut off the bottom of the
2 liter right above the black thing on the bottom.  Remove the cap
and drill a small hole in it.  Now, scrape out the plastic inside the
cap.  Place your bowl over the opening, and tape it down to make a
seal. Fill the 3 liter with cool water to the top, leave about an inch
free so you don't spill water.  Before you put on the cap, place the 2
liter bottle in the 3 liter, letting it slide slowly down.  Put on the
cap (with attached bowl), place the screen in the bowl, and fill with
pot.  You don't need that much,  overdoing it just wastes the stuff.
Place your lighter over the bowl, and light it, while slowly lifting
up the 2 liter bottle.  This creates a vacuum inside the 2 liter bowl,
which draws the flame into the bowl, and the smoke into the bottle.
Go slowly, and remove your lighter.  Keep pulling up, and the vacuum
will keep the pot burning.  Once the entire bottle is filled up (being
carefull not to go to far), carefully unscrew the cap.  Place your
hand over the mouth of the bottle, to stop smoke from comming out.
Breathe out almost all your air, and then place your mouth over the
bottle.  Slowly push the 2 liter bottle down, forcing all the smoke
into your lungs.  Make sure you don't go down to far and get water in
your lungs, it's the worst.   If you have decent pot, you should get a
major high pretty quickly, you will only need about 2 hits.  Warning :
It's not possible to O.D. on pot, but if you are inexperianced, this
much pot will bring you to a very high peak, to the point where you
loose many of your senses, and find it hard to speak or understand
anyone.  It has the possibility of being a bad experiance.  On the
other hand, it can be a truly great experiance.