ok i'm sober at the moment so i'll see if i can describe the technique better

what you need: weed, lighter, cigarette, water bottle, coffee grinder

they grinded up the weed really good, and it looked like he was compressing with two drivers licenses. he made a few 'bots' with this, which were about a third of the size of a penny, and the thickness of the penny

a whole was burned into the empty water bottle at the bottom. The cap was kept on the water bottle.

the cigarette was smoked til about half way. then the 'bots' were dabbed with the cigarette. my buddy held the cigarette near the hole in the water bottle and said he was trying to find the perfect angle.

Somehow the tabbacco smoke traveled up, while the weed smoke traveled down into the water bottle, to which it was smoked from. makes any sense? i'm going to try to find a video..