Dragonball, I'm pretty sure. A loooong time ago. No clue how I got it. The first scanlation site I remember visiting was Toriyama's World, about a billion years ago, when they got started on Naruto localization. That's right, i liked it BEFORE it was cool. And got... rather lame.
I know I read a few of the Toriyama one-shots on TW back then, too, possibly before I ever touched Dragonball or Naruto, but I'll be damned if I remember the actual order.