its were u take the part of your pipe that u put the bud in and heat it up hella hot all over the top and press it on your skin for like 5 seconds, i have 2 one was a acsident the other i wanted it, but the one i wanted was from the 45 degree agnel metal pipe i had, then the other i got like a week after the 1st one, from my 2ft steam roller, i posted pics above, but anyways my friend wanted to smoke sum more pot and he burnt me with it cuz i wasnt listening to him... *SIGH* the good old days, we fit 15 ppls in a lil 80 sumthin VW Rabbit, now that was sum killer shit.