Oh, the number of times I've left kebab places without them charging me, only to walk back in and pay. Mostly because I'm paranoid about them realizing it and remembering it the next time I go there, but still... B-)
I and a friend also turned in two mopeds we found in the woods to the police. A month later, we could pick them up since nobody had claimed them, and after a 10 second test drive in his back yard we sold them and I bought a computer.
Does anyone have any good stories of being too honest? I mean, to the point of causing trouble.