Brostradamus 

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.

Brostradamus by neithertegannorsara July 4, 2010

brostradamus 

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."

brostradamus by Quizzledorf May 11, 2008