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The one who has the bigger beard has the right of way.

The smaller beard, or one with no beard (also known as a "boy" not a man) must yield to the larger beard!
A man (bearded) and a boy (the un-bearded) walk up to a door at the same time,

Boy: excuse me sir!
Man: thank you (walks ahead of him in bearded glory)
Boys wife: what just happened?
Boy: it's beard law... I had to yield!
by MURF September 15, 2013
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