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A greiby is a weird dude. They are usually nice. They aren't afraid to show off their weirdness. Greiby's are kind and loyal people. If you ever find a guy named Greiby become their friend. They are the life of the party.
Person 1: Hey look at that weirdo over there.....
Person 2: He looks like a fun dude. He seems like a greiby...
Person 1: Hey your right lets go up to him and become his friend.
by SummerShimmer5 June 03, 2017
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