1 definition by Jeremaaay

Top Definition
Barack Obama's nickname, only to be used by his closest friends and dearest acquaintances.
What do you think of Barack Obama?
Oh, Barry O.? He's great. We go way back.
Yeah I like Barry O. too!
Shut your face! You don't know him, so you can't call him that.
by Jeremaaay November 28, 2010
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