1 definition by Dre'
After crossing two or more rivers to get to your destination, sleeping or hooking up with other people is no longer considered "cheating" on your spouse and everybody is fair game.
If I fly to Germany for a business trip and leave my wife behind, I am ultimately crossing two rivers, therefore, sleeping with other women is not considered cheating, because I've crossed two rivers, putting the "Two River Rule" into effect
by Dre' October 16, 2012