When I was a small child, in kindergarten, one afternoon the children convinced one of the janitors -- a large, athletic fellow -- to spin the merry-go-round. I was on the merry-go-round, and the janitor or janitors began running, spinning the thing. We went around and around, faster and faster until we were going much faster than the thing was made for. I recall having a horrible feeling in my gut -- like I was being held back, couldn't breathe. I remember my vision being very much distorted, and for some reason I associate the color green with the memory. Eventually the torture -- for me, anyway- ended, and I crawled off of it. The visual distortion and instinctual terror faded. I didn't get physically sick -- no vomiting -- but I remember feeling terrible. Ever since then occassionaly I'll have a nightmare where that feeling revisits me. Sometimes I'll be on a roller coaster (I avoid them and other amusement park rides that feature a lot of disorienting movement in the waking world, not tempting that feeling), sometimes I'm in a car. I attribute any lucidity I have in dreams to the terror of feeling that way. Whenever I sense that feeling coming on and getting stronger in a dream, I begin screaming at myself to wake up, to stop; and it happens. I experience a minor gut feeling all of the time -- coasting down a hill when I'm driving in the country one day, but then it's sort of a ticklish feeling that makes me smile. I have no idea what this feeling is, nor do I have an idea of what that motion-terror is really called. I figured it was most kin to motion sickness, which is why I titled this post as I have. So: 1. Has anyone ever had an experience like this? 2. Can you tell me what I'm feeling?