Me and my friend hotboxed my room once... we did it REALLY stupid stylie. Just wasting weed because we were retarded. I have a three foot bong, so we'd fill the chamber nice and thick with smoke, and then take the bowl out and blow all the smoke out the top. It was fun. But again, a TOTAL waste of weed. lol. Ahh yes, the newbie days of smoking weed and the better ways to waste a quarter o of schwagg in a night. Memories. Anyway, you hotbox your room bad enough.. it takes forever to get that scent outta there.