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Someone who is at the bottom of the friendship chain and can never make friends with anyone, even if he tries very hard. Not even his family likes him.

He finds it really had to make friends and is often lonely and turns to his pets which often hate him as well. He spends most his days making Youtube videos and walking around his house with a hoodie
Example 1: Dude you see person's name over there, he is acting like a Sinabix

Example 2: Why does no one like me. Wait have I become a Sinabix
by Danjobro August 24, 2014
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