It's all fun and games

I don't know if this phrase would have any specific origin, but does anyone know of one?

-quote-
The term, "It's all fun and games until someone loses an eye" is from Ancient Rome. The only rule during wrestling matches was, "No eye gouging." Everything else was allowed. The only way to be disqualified was to poke someone's eye out.
-end quote-

The Ancient Romans and mothers everywhere have used this phrase.