canadian rules 

While in High School in Buffalo, NY - wew used the terms "canadian rules" to indicate to others that whatever was going to happen next would not discussed with anyone back in the USA. There is a certain amount of protocol - in that you have to call it in advance.

While dropping your spunk on a Canadian's nose - you would call "canadian rules" so that your girls in the US would never hear about it.

canadian rules by PNBoehm September 15, 2004