There once was pirate captain who, whenever it looked like a battle would be imminent would change into a red shirt. After observing this behavior for a few months, one of the crew members asked him what it meant.
"It's in case I get shot. I don't want you crew members to see *lo** and freak out."
"That's very sensible, sir." At that moment, the crew member spotted eight hostile ships on the horizon. The captain all of a sudden looked very concerned.