Well if you ask me dude I would bet on you having an empty stomach made you puke. A while back after a football game my senior year my buds got together and smoked about a 1/4 and I got sick and threw up. Only time I ever puked too, but I didn't have a bite to eat since lunch which was at noon and we smoked around 11 at night. Not having anything to drink after or during smoking can make me feel a little sick sometimes too. Hope I helped. Peace dude and hope it doesn't happen to ya again.