this has happened to me multiple times except i never lost consciousness or fell over. It happened while driving and smoken, i would take a huge hit and as i breath it out i start to loose vision, and black out. Obviosly i was scared shitless and started slowing down..good thing i was on the high way every time that happened so i just had to keep the car straight for ten seconds till i can see agian.
also, i was smoken some good shit with this chick out of her bong one time, and as soon as she took the hit she fell backwards into the couch and dropped the bong, and i started shaken her, she was out for a good 30 seconds...
so weird
Have you stopped doing that yet? Maybe you shouldn't smoke while driving?