The Lung is another unfiltered lungful. Again, grab a big bottle
(1 or 2 litres) but this time cut away the bottom of the bottle. You
should now have a bottle missing its bottom! You'll also need a plastic
bag, something without holes that can be taped or attached with rubber-bands
to the opening at the bottom of the bottle. Make sure that the bag makes
an air-tight seal around the bottle. Then push the bag into the bottle,
the end of the bag should reach up to the end of the bottle neck, as
in the diagram above.
Get your 'mix cone' ready and put it onto the opening of the bottle.
Grip the end of the bag (the bit inside the bottle), apply a flame to
your 'mix cone' and gently pull the bag away from the top of the bottle.
Again, keep the flame applied to the 'mix' until the 'mix' has burnt
through or there is no more suction. You'll notice that pulling the
bag away draws in the smoke from the burning 'mix'. Once the bottle-chamber
is full of smoke, quickly remove the 'mix cone' and inhale the smoke.