I've always wondered what it would be like to smoke in zero gravity. You wouldn't be able to do that on the Moon, but you could do it on the way there. You would be limited pretty much to joints and blunts, because in a bowl your burning weed is going to go everywhere and as for the bong...forget about it. Ain't gonna work. But you could probably do some neat shit with a joint. You could light it and twirl around, creating spiral smoke trails. And you could pass the joint by just letting it go in mid-air and letting someone else pick it up.