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A proper irritating c***. Someone who thinks they they are clever/funny/charming but are actually very sad people with no friends and usually posesses a small penis. Hence, the need to mask this by being totally obnoxious.
That guy he's talking sh**. He's a real NerdyKnowAll.

Why's he slagging off Burley? He must be a NerdyKnowAll.
by Gav TWTD September 27, 2005
9 3

Words related to NerdyKnowAll:

knowall nerd nerdo nerdy