ok a roach is there one so the joint doesnt dissolve in you mouth and two to not inhale the weed like you said you use a bud grinder to grind up the bud or if you dont have a grinder just use some sheers to cut her up. And DONT SMOKE THE STEMS OR SEEDS!!! very important if you smoke the seeds which are the little seeds in the bud (duh) if fucking reaks havok on you lungs and the stems are the woody bits in the ground up. have fun and here are some links to show how to make bongs and stuff.

http://www.smokingwithstyle.com/waterpipe.htm


but make sure to make the inside of the pen insulated with tin foil because if the pen melts the gases are hella toxic...you know what maybe you should just stick with the tobacco pipe just to be safe. haha.