Oh man, this is embarrasing. This happened in a German league match. The goal keeper turns his back on the play and walks back to grab a drink from his water bottle, not realizing the other team is coming at him. The look on his face when he realizes what he's done, after the goal has been scored, is priceless. Like, "wha happened??" Luckily, his teammates were a little more alert overall, and they won the game 2-1, despite his brain fart.
This story actually gets better...the goalkeeper is now auctioning off the water bottle from the game for charity. Check out the story HERE At least he's got a great sense of humor!