youve got a 2L bottle with a hole in the bottom corner and a hole in the cap where you can put a bowl. fill the bowl with weed and attach the bowl to the cap, put this aside. fill up the bottle by covering the hole in the corner and screw the cap on. light the bowl and release the hole in the bottle. the water should flow out the hole and the suction is lighting the bowl, making the 2L(or bigger, but bigger bottle= more ganja necessary) fill with smoke. after all the water has flown out, unscrew the cap and inhale that think smoke :thumbsup: