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The act of knowing what your bro is thinking, without having any immediate communication with him.
Bro 1: I just made seventy dollars by mowing one lawn!
Bro 2: Whoa! I was just thinking about your lawn business.
by Bromeo Montague July 21, 2010
When to bros are on the same brain wave or know what the other bro is thinking.
*Jessica Alba walks by*

Bro 1 & 2: Shit dude, I just jizzed my pants.
Bro 1: We definitely just had a broment of brolepathy rite there.
by jignasty January 12, 2010