Something happened today that I really do not understand...

In the midst of a really intense flogging, I had some sort of "wave of emotion" to come over me. I felt for a few seconds like I was about to cry. I told myself it was ok to cry if I wanted to, but in an instant, I was laughing my ass off. I did not intend to...I certainly didn't want to, and I wish I hadn't. But I couldn't help it, it just happened.

Has this happened to anyone else, and does anyone know why this would happen? Any replies appreciated because I don't have a clue.