Had some for the first (and probably last) time last weekend. My friend JJ and I drove up to Santa Barbara for the weekend to visit one of his friends, Austin. First day there, we all went out for pizza, then came back to his house and smoked a bowl. I guess they had been talking about doing it before (Austin had tried it twice and convinced JJ to try). They talked me into trying it too, with Austin acting as trip sitter.
We both took the hit -- he from a bong, me from a pipe -- and it hit me IMMEDIATELY as I exhaled. It felt like I was on a huge roller coaster, just about to take the first plunge; I wasn't prepared for it at all. The ceiling of his apartment opened up and I could see the sky outside, with the sun shining through and everything (it was pretty cloudy that day, IIRC). I looked around and saw the walls take on a life of their own -- textures were moving and shifting constantly, pictures staring at me, and colors bleeding everywhere. I closed my eyes, but that did nothing; I saw every shape and color imaginable. It was like looking into a kaleidoscope. I opened my eyes again, and the world now looked like someone had taken a paintbrush to it. I could see brush strokes constantly painting over everything in the apartment. I looked at my arm and saw the skin twist and change every second. It was the greatest feeling I'd ever had.
And then JJ started vomiting.
Up until then, I'd been loving the whole thing, going so far as to describe everything I saw to Austin. But apparently JJ wasn't doing so well. As soon as he took the hit, he passed out completely, hitting his head on the back of the futon he was sitting on. A minute or so later (about the time Picasso saw fit to paint my eyeballs), I heard Austin yell out JJ's name just before I heard the most ungodly noise erupt from his mouth.
Apparently, he had sat back up and started violently vomiting everywhere. I got scared immediately, and ended up curling into a ball on the other couch while Austin tried to deflect the geyser of puke into a bucket. I remember not daring to look at what was going on, lest I start getting sick myself. I just lay there crying and laughing, because hearing that shit was both intensely scary and absolutely hilarious at the same time. My friend sounded like Satan was ass-raping him with a lightning rod, and I was tripping balls having a staring contest with the couch cushions (I won!).
Eventually we both came down -- the trip lasts about 5-10 minutes -- and JJ (having no idea what happened) began freaking out as to why he was covered in puke. Austin and I spent the next few minutes calming him down, feeling relieved that he was okay.
Hell of an experience, and I'm glad I did it, but I'm not in a rush to try it again. JJ wants to though -- after hearing about my trip, he says he feels cheated out of an awesome experience. Yeah...