My friend actually swallows the end of the roach when he is done smoking it. Its a pretty cool party trick but my friend only does it when smoking blunts not joints. He calls it the "wu tang" or "wu tangin the blunt." Basically when the roach gets towards the end he'll take a couple of puffs and then on the third do a really big inhale swallowing the roach. You have to be careful though as you can burn the back of your throat if not done quickly and properly. The main thing though is having confidence that you can do it and you'll find its easier than you think. Haha me and my friends always laugh when he does it cause we know he has like 25 blunt roaches sitting in his lungs.