I was on a school ski trip to Italy. The water they served us with dinner had been contaminated by flies, since it had been left open and uncovered for a whole day. Needless to say, a number of people came down with various illnesses, including myself. However, I soldiered on, and continued to ski, feeling unwell.
It was on one of the the lifts however that I suddenly felt a worrying tinge in my colon. To cut a long story short, I couldn't hold it any longer, and resultantly, the projectile shit ran down my leg, and into my boot. So, I had to throw my snowpants and Intuition liners away, as no amount of washing could salvage them.