London 2012: Olympic 50p coin aims to explain football's offside rule
4 January 2012 Last updated at 17:08 GMT
The Royal Mint has issued a new 50p coin which attempts to explains football's offside rule to the many who do not understand it.
It is part of a new set of coins which celebrate the London 2012 Olympics.
The coin's designer Neil Wolfson explained how he came up with the idea.