What is it that makes other people’s misfortunes funny? I remember once at a Boy Scout meeting that I leaned back in my chair and the guy next to me tipped it farther back with his foot and I fell on my back. Everybody laughed. A few minutes later, I did the same thing to him. The scout master was there in both cases. He laughed with everybody else when I fell, but gave me a lecture about how dangerous that could be when the other guy fell.