what the fuck?? none of this sounds like shit that should happen on marijuana. i've been blazing everyday for the last 5 years. and i have never passed out and destroyed a room while i was blacked out. but it does sound like somthing that alcohol would do. but you never mentioned any drinking...and then all of you have these stories, ranging from passing out and getting concussions multiple times, to falling over in the shower....all i got to ask is are you regularly dosing any other substances? not everyday, but weekly, everyother day? because ganja should not fuck you up this much....and don't get me wrong i'm smoking really potent ganja, i live in BC! and before that i lived in California....so i don't know what the variable in this equation is that is doing this to you guys.....but if your getting this fucked up, you should consider another substance....
yesh this has happened to me before. i was in the middle of making waffles with my buddies after smoking a little too much and liek i just felt helluv light headed and just dropped to the floor. i felt kindof embarassing. i got up, and aparently had only been down for like 4 seconds, but it seemed like an hour. ive continued to smoke after that and it never happened again. prolly just low heart beat from too much smoke and getting up on an empty stomache too fast. hope its cool though dude best of luck