You Will Never Know

You want to know the worst thing I have ever done? Before we go any further, answer me three questions. You need to know this because...? What will you do with the information? Use it some way that could get me in trouble?

The worst thing I have ever done is something noone will ever know. I'm not even sure I know myself. There are a couple of things I've done that tie for the title of "the worst thing". It's a photo finish, but the camera malfunctioned when they crossed the finish line.

So, I guess we'll both walk away, wondering... What's the worse thing I have ever done?