First coaster: Little Dipper at Memphis Kiddie Park (near Brooklyn, Oh). My grandpa knew the owner, and resulted in us getting free rides all the time! Got me & my brother hooked early.
First BIG coaster: Cedar Creek Mine Ride. Screamed the entire way through with my dad.
And finally, worst: Corkscrew @ CP. For some reason, I just can't ride it without aquiring a headache. But always get back on next visit...
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"Carnies built this country, the carnival part of it, anyway." - Homer