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a rule stating that if you are more than 50 miles away from the person you are dating then all faithfulness to your significant other is null and void. Similar to out of sight out of mind.
Sally said she was enacting the 50 mile rule when she went home with random far away bar guy.
by inspire_d March 12, 2004

Words related to 50 mile rule

3 river rule out of sight out of mind