Take a 0,5 litre plastic bottle, make a little hole on the side using a cig, put a piece of hash on the cig and insert it in the hole, when burning the hash will produce a bottle full of white white smoke, when the hash is gone take off the cap and take all of it in 1 hit... The most I've ever done in a row was 7... And it was the worst hash ever... :thumbsup::stoned: