1 definition by Deacon Sider

1.) A term used to describe a person's face when they are acting like an asshole.

2.) A term used when referring to a male giving anal sex to a female partner.
ex 1: "I don't know what his problem is, but Ross is really showing his dark side of the moon today..."

ex 2: Friend 1 - "Yo dude, you slay any holes last night?"
Friend 2 - "Yeah man but she was on the rag so I went to the dark side of the moon."
by Deacon Sider August 16, 2010
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