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2.
A bro of such incredible wisdom that he can see into the future.
Jeremy: Dude, Arthur told me that this chick was gonna ask me out and she totally did it!
Brent: Yeah, he's a real brostradamus.
by neithertegannorsara June 29, 2010
 
1.
A "bro" who works as a pharmacist and predicts the future quite often.
"...damn brostradamus, how'd you know I'd get in the car crash?"
"I don't know. Have some vicodin."
by Quizzledorf May 11, 2008