riddle me this

Here's a riddle/life experience that I had happen to me today.

In a patient's room, I bent over... and i swear, it was an accident.. .My bottom became noticeably wet.. I walked, a little embarrassed, with my shirt pulled down and tried to keep my back side away from people to avoid them noticing. But in the end... my pants were cleaner than before. What happened?

Answer?
Think about it a little more.
...
truth: I bent over. This caused my butt to activate the sensor on the automatic hand sanitizer... and you thought I actually peed my pants - GROSS!