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Someone who is exceptionally good looking on Facebook or other social media websites. When you view them in person, they are quite the opposite.
Nick: "You see that dime update her new profile picture today?"

David: "Yeah man, but she is quite the Facebook Myth. You'll see her in class tomorrow. Busted."

Nick: "Ahh..I'll save these photos into the spank bank though."
by Mitts the Tits October 18, 2012
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