Op,
I had the exact same experience that you did when I smoked a gravity bong. This was when I was a junior in High School. I felt like the world completely different. In fact, I felt I was in a dream that didn't end.
I was at a friend's house and after we smoked, we watched re-runs of "Married with Children". I remember that everything looked like it was running at 10 FPS, and I couldn't understand what was being said on TV.
A few of my other friend's stopped by and picked me up. They were racers at the time, and they drove very fast. I was so sensitive to the motion of the car, I felt like I was in a nightmare. I almost cried and begged for them to slow down.
They dropped me off at home, and I just went straight to my room. I took two weeks off of school.
It took me about 6 months to fully recover from that incident. I have smoked weed about 4 times since that incident, and It has never felt pleasurable at all. It's always this weird feeling.
ON 23andme, there is a discussion about this. More than a few people have had similar experiences, and we all have this gene that makes us hypersensitive to some drug called waffarin.
I would check out 23andMe, you may have this gene. If you do, I would stay away from weed. It's something that all these weed advocates should consider. Marijuana is a potent drug especially to those who are sensitive to it like me.
BTW
I remember being much more astute at math homework after this phase. I suspect my brain was damaged by this event, and perhaps I was young enough for my brain to compensate for this damage by rewiring my brain.