LOL, totally forgot about 420, already blazed up in the parking lot before work, as usual.
i remember taking Gravity Bongs with my friends back in High School, when one of them was'nt looking, we packed it up with oregano, and pulled up a huge hit, then called him over, "yo man, you're up, hurry". The bottle was a dark brown color, he took the whole thing down and started coughing, puking, turned bright red. that 1 hit probably took 5 years off his life.
that's just one that comes to mind.