A huge military transport plane is flying with a fighter jet escort. The fighter pilot starts getting bored, so he begins pulling off crazy aerobatic maneuvers—loops, rolls, inverted flight. He gets on the radio and boasts to the transport pilot: "See that? You could never pull that off in your flying tank!" The transport pilot replies: "Oh yeah? I bet I can do something right now that you couldn't possibly duplicate." The fighter pilot scoffs and watches closely. Fifteen minutes pass. The transport plane just keeps flying straight and level, completely unchanged. Finally, the transport pilot comes back on the radio: "So, how was that? Impressed?" "Impressed by what?!" the fighter pilot asks, confused. "You didn't do anything!" "Well, I just took a leak, stretched my legs, and grabbed a fresh cup of coffee."