One time when I got stoned with roomate and friend, hadn't been smoking for long, got incredibly stoned, more than I ever have been since-everything was magnified in my vision, i could barely walk, my head felt like it was gonna implode and my lungs felt like someone had poured napalm down them-not pleasent. Then I was sick and felt much better, and fell asleep. If you feel like that better to puke-better out than in, and then just chill, and you'll soon feel better.

I've never puked since then, but have felt like dodgey, only a few times and only when I was very stoned.