My arm once got pulled into an electric fence when I was a kid and I couldn't stop getting shocked until someone physically pulled me away. It was more of a self-control issue than accidentally bridging the gap.
That was the day I learned that some pain can be pleasant. The owner of the property didn't seem as pleased with my discovery as I did. He had to shut off the fence and yanked my arm away and then told me to go explore my perversions somewhere else. I was too young to understand the word "perversion," and I'm now eternally grateful to that poor unprepared rancher.