actually, this happened to me. i was at warped tour, not only smoking weed, but on another drug that shant be mentioned, but it made me feel quite extatic... anyways i was stuck in betweeen hundreds of sweaty people on one of the hottest days of last summer. after the show i stumble over to the stage and ask for water, they tell me i have to go to the sound tent 100 m away. on the way i almost puked and passed out, but once that water hit my toungue it was awesome. probably not as bad as what you have