Other.
Sounds like my story is not unlike the rest here.
My oldest sister purchased the Red Boxed set at a Kay Bee toy store (I think) at a mall in Little Rock. She had it for a while, and didn't really know what to do with it, so she gave it to me (I was probably 10 at the time), but I didn't know what to do with it, either, except look at all the cool art.
It wasn't until 5th grade ('82-'83) that I was invited to a birthday party and they were playing some D&D there. They asked me beforehand what I wanted to play (based on the pictures), and I chose the thief. I don't really remember much about that game (blocked out most of my 5th grade year), other than my character found a secret door in his room at the Inn, and we did something on the dock outside. (That ring a bell for anyone? I think it was a published module they'd purchased)
Anyway, a couple of years later, I invited some friends over (a girl-friend, and her younger sister, and some others) to try to figure out how to play the game. We were unsuccesful. The concept of "DM" didn't really sink in for us.
It wasn't until my sophomore year when I was invited to join a 1E game with some friends. We started out playing Dragonlance (didn't know what that was), and then we switched to Forgotten Realms (taking a Kender, and a minotaur with us), but I didn't know what FR was, either. I wasn't into reading any of the books, but I did enjoy the cartoon, and I liked playing lots of video games, so I'm sure that all contributed.
By the time I was a senior, I pretty much only DM'd (even though I totally sucked). Not much has changed.
