Back in 2008, when those weird lines appeared on Pitt's back, people had all sorts of guesses as to what it meant. Some said it was the New Orleans levee system, while others figured it was a design from one of his kids. But guess what -- it's meaningless. Angelina Jolie told Entertainment Weekly, "I drew that. We went to Davos. It's not that we were bored at the World Economic Forum, but one night we didn't have anything to do, so I was drawing on his back."