1. A penis shaft that has been forcibly separated from the head. This could be the result of a Louisiana jack hammer or a failed attempt to execute a bloody sock.

2. The King of France from 1774 to 1791 who was executed by decapitation.
Al slapped her for the toothy blow, and she gave him a Louis XVI!
by Dinsdale.Piranha April 25, 2007
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To continue fucking someone over when they keep asking for respect
I hate him because he just pulled a King Louis XVI
by Gggggttgttgf April 6, 2017
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