make a hole in the bottle cap to put your bowl/socket into and put weed in bowl then light weed remove finger water falls out weed get pulled by suction(fuck spelling) filling the two liter with smoke, once all the water is gone replace finger on hole so you dont loose any smoke cap the bowl so it goes out(saves weed that way) remove the bottle cap, put mouth on bottle opening remove finger once more and suck smoke into lungs 1 or two hits is good thats a big ass hit