Well basically, I have a few that were beyond my control, but still bad. I'll start with the worse and more painful one. To put it simply, while my grandfather was being buried, I as a three year old pulled down my trousers and began pissing on the soil that had being removed from the ground. Reaaaaally bad, but there you go.
Another one was less embaressing and more amusing. As a baby, I had an entire pool shut down for a day because I dhat in the pool when left unattended. I was a horrible baby. Also pretty much anything I did on Club Penguin as a kid. Pretty much all of the things you can imagine.