Many years ago, a friend of mine, who should have known better, took his cub scout son and two other cubs on a flight in our Cessna 172. The boys were not velcroed to their seats, and kept popping up and down and generally making this pilot deeply regret taking this flight, when one of the boys shrieked that he had lost his pet, which no one knew was on board, except for the miscreant. While trying to find out exactly what the pet was, my friend thought he glimpsed a furry thing down by the rudder pedals on his side of the plane, but when he looked around to make sure there was no other traffic nearby so he could lower his head for a better look, the furry thing began crawling up his leg, inside his pants. He was not amused!
He had a plane full of screaming, squirming 10 year olds, an airplane without an autopilot and an unknown furry thing crawling towards his privates. He multi tasked, yelling at the boys to sit down and put their belts back on, trimmed the plane for hands off flight and wrapped both hands around his leg, which made the furry thing retreat back to the rudder pedals. Once it was out, he grabbed it and gave it back to the cub who smuggled it on board, and silently vowed to never again volunteer for such a hazardous, foolish mission. The furry thing, by the way, was a hamster.