my gravity is a hawaiian punch jug with the top cut off, water in this, then 2 litre bottle with bottom cut off, set in water, take an old metal bowl piece off a pipe, take off the mouthpiece too, screw mouthpiece to bottom of bowlpiece, heat icepick with lighter make a hole in the 2 litre cap just a bit smaller then the mouthpiece end, pop through the cap, screw on the top of 2 litre bottle, pack, light while lifting up, unscrew cap and push down to hit...

dont push too hard tho ive had many laps full of bong water ewww....

__________________
"Religion is the opiate of the masses" - Karl Marx