I've never had that type of experience from 2C-I. It's always pretty mellow for me. I expereinced the same things you described from about 25 mg of 2C-T-7. Insane visuals, drugged-out type feel. If you only took a really small amount it may have been 5 meo-amt. I had similar effects at 5-7 mg. I think 2C-I is one of the few RCs I WOULD do in a music festival or whatever. That or 2C-C. Really mellow and sociable.