I've heard it is a dominance thing, too.

Hopefully this will be a one time heist!

OMG shame on me I can't quit laughing.


You are not alone. Just remember that. It happens to all of us occasionally. I remember the second time I used the blow dryer on Kacee that she peed on me. The good thing was that she was so little then that it didn't amount to much.
Being serious, I wouldn't worry too much about it unless it happened again. Then I'd probably feel I had a problem - besides the wet sneakers!