Leonardo da Vinci, Prankster
“[Giorgio] Vasari described how Leonardo took a lizard captured by an assistant, pasted on a beard and wings, and kept it in a box to frighten his friends. He also took the intestines of a steer and ‘made them so fine that they could be compressed into the palm of one hand. Then he would fix one end of them to a pair of bellows lying in another room, and when they were inflated they filled the room in which they were and forced anyone standing there into a corner.’”
(Isaacson, 176.)