My friend took a big hit from his pipe in my other friend's dorm and after he blew it through the sploof and out the window, he just drops backwards, hits his head on my lap and bounces off and lands on the floor. His eyes were closed for about a second then he opens them and starts getting up and me and my friend are like "Nate! Dude are you okay!!" and he just sort of sits there staring up for like 4 seconds, then goes "What happened?" We told him. I think it was just a headrush? I dunno, but it looked scary and painful. He said he has blacked out on weed before but has never fainted.