Good freaking grief, that's scary! I think most people would use it in moderation and with a dose of common sense -oh wait, we're talking about stoners here, LOL. I've smoked some and gotten sick on my stomach several times; that sucks bigtime. I almost always puke when I smoke hash but I can never refuse that little pipe when it's passed around.
We were at a friends secret house back in about 1972; he had inherited his deceased grandfathers old store waaaaaaaay out in the country. It was a two story built on a steep embankment and if you didn't go behind the store you'd never have known it was two stories. He had the windows painted black and plywood over them from the inside so it was totally blacked out when the lights were on. The only lights were blacklights though. He was very artistic and had some day-glo paints that he went crazy with. He had painted King Crimson characters on the walls and more stuff off album covers (for you young whipper snappers that's how music came back then), very trippy, psychedelic stuff. My best friend was the guy that always had "stuff" and he was there. I was already messed up to begin with (always was except first thing in the morning) and there was about a dozen of us sitting around in a circle on the floor in the big room. I was sitting directly across from Larry (my best friend). He started rolling joints, one right after the other, lighting one & passing it to the left, rolling another, lighting it and passing it to the right. He could roll a J faster than anybody too. He must have rolled about 6 or 8 J's and I was getting hit left and right, one right after the other til I had taken a big hit off each one. By the time I had gotten a hit off each one they were coming back around again. I was already tripping my ass off on some acid and mescaline. A couple of freaks (more of my friends) started doing Frank Zappa and Captain Beefheart songs and it started to get a little too surreal for me. I had to go outside with a couple of friends to try and come down a bit. I had a cigarette and was watching the trails go all the way to the ground and back to the end of the cig, just like a yo-yo. I was also having auditory halucinations too; when one of the guys would say something I would hear it twice. I just though he was messing me. When I said something to them about it they both started talking and it was almost overwhelming. Later that night I crushed up a hit of acid and snorted it and we went to Larry's girlfriends house. She had this man-killer dog that came running up to me, growling and trying to bite me. I was seeing flashing lights and all sorts of weird stuff; I was totally freaked out. We went inside and listened to "DOA" by Bloodrock, LOL. I didn't do this much drugs as a normal thing but our drummer was moving and we got his ass fried - not to mention ourselves. My brain was sort of glazed over for a few days like I had been snorting Ora-Gel. I think that was the only time I ever had a bad experience but when you are that stupid you get what you ask for.