My bad!

I can be one of those cell phone fascists who hates to hear someone's phone ringing when there should be no phones ringing.
Imagine my embarrassment at dojo when my phone starting going off during the first part of class!

I cannot remember the last time my phone wasn't set either to vibrate, or turned off completely during class. Seems I had a monthly event on my calendar, so it kept trying to remind me — every ten minutes!
Of course, I was thinking to myself, "What jerk left their phone on during class?!" Then I got to thinking about what date it was, & that I had set the alarm earlier so that I could grab a quick snooze before class... .