Haha, mine were all about spanking. I witnessed a friend getting spanked when I was around 3 (we got caught playing doctor, his mom was an abusive bitch) and later when I was around 12 and never was able to let it go. I would ask my friends about their experiences, and played "school" while hoping I would be the one taken over the knee, and got caught looking up spanking porn. I would also imagine a computer game revolving around me getting spanked in a bunch of different scenarios.
The whole self injury thing is really fascinating to me. Im majoring in psychology to learn more about it, but I also have self destructive tendencies. In 6th grade, I got caught rubbing scissors against the back of my hand, not enough to cut but enough to hurt, and freaked out about being caught. I still have issues with self destruction, cutting and addiction to hydrocodone among other things. Long since given up on being 'saved' but I just keep from getting too deep into it to the point where others notice.