Top Definition
Asshole who thinks he knows everything about sports. Mr. Know-it-all. Also see sore loser. Makes fun of everyone in his fantasy football league on their trades and pickups but has one of the worst teams. Captain Losers Bracket.
He really didn't have to throw that bat after he struck out, what an Oldshak.
by Reverend Amish November 16, 2007
5 Words related to Oldshak

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