"There was the time my OB tampon slowly slid down my leg while I was teaching about 50 university students of both genders. I managed to stuff it into my sock until I was able to take a 'natural' break and, er, adjust the stereo volume, at which time I also changed my socks and stuffed them in my gym bag. Yeah, when you're the instructor and they're all waiting for you, it's not like that's particularly subtle." —Alexandra