1 definition by blackpearl905

Top Definition
The act of two people, male or female in any combination, rubbing their anus' together for the purpose of sexual gratification.
My wife makes me take a shower to remove my duck butter before long sessions of port holing.

After a long workout there is nothing quite as gratifying as the sweet surrender of port holing my best friend.
by blackpearl905 April 29, 2012
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