Perhaps a manager signalling to the match official that they believed their player had dived and it wasn't a penalty would work but there would have to be pigs flying over at the same time! Some players have earned a reputation for conning the referee and indeed some referees appear willing to be conned. For those of you who are or have been involved in a playing/training/managing capacity what limits are drawn over which no player should go beyond to win a game (apart from not putting another player in physical danger)?