When a guy REALLY like the Jonas Brothers, usually in a creepy stalker-fan fashion.
A: "We need one more guy for COD, should we call Alex?"

B: "No, hes busy. He went to the Jonas Brothers concert tonight."

A: "Ah, hes gone a Jo Bro Homo!"
by WiseWordsFromLemons August 11, 2010
Get the Jo Bro Homo mug.