Script (guión): Idioms, ‘clean sheet’. If you have a clean sheet you have no criminal records or problems affecting your reputation. In football, if a goal keeper has a clean sheet, he doesn't let any goals in. Owen was a goal keeper for his local team Stockpot County and he managed to keep a clean sheet for the first eight games of the season that was until they came up against Oxford town and he let in six goals in one game.