A trombone player friend of mine told me this story about a gig he was doing in Nashville in a pit orchestra for a musical. They were all wearing tuxes but were given the option, given the heat and humidity, to take off the jackets.
In front of him was a trumpet player, who was battling an intestinal bug.
Halfway through the second number, said trumpet player was required to hit a very high note. When he hit the note, said trumpet player lost his seal and proceeded to shit not only his pants but the force of the note he was trying to hit and the broken seal caused him to shit all the way up the back of his white tux shirt.
He was given the rest of the night off.
