I rode a kiddie rollercoaster with my mom one time at Six Flags in Dallas, and nearly DIED, we were both so scared on it! :)

Then I remember riding the Viper here in Houston with my best friend, and we could only scream profanity, I fear. It was a metal coaster and went upside down and sideways and scared the beejeebees out of me.

The worst, though, was the Rattler in San Antonio. At the time, it was the tallest wooden rollercoaster in the world... and when I got off, I was sure I'd NEED therapy, lol!