Panathinaikos' Miroslav Raduljica had a bit of a brain fart during this free throw. An opposing player missed the shot, and Raduljica rebounded. But Raduljica assumed the ball was going in, so he threw it out of bounds to a ref to inbound. It's a foolish case of not paying attention, but at least he didn't take his coach's seat cushion and forget what he was going to do with it.
(h/t @Shaqtin_A_Fool)