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A huge donkey that is always mad.
Bro, its ok, you don't have to be such a siddu!
by RealGreen May 17, 2017
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2
A kid that calls people irrelevant, when he is really the most irrelevant person out there.
Kid: Your so irrelevant! Nobody knows you!
Kid 2: Your talking? Your being a siddu, you know that right.
by RealGreen July 07, 2018
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