when good friends (guys) immediately think of the same thing and quote it. no matter the distance the thought can be shared.
(two friends in different cities talking over IM)"I AM THE LAWWW" "THE LAWWWWWWWW" dude... epic bropathy!
The mental link between two or more bros. Unaffected by distance. Enables bros to communicate without complete and accurate descriptions of events and items.
Bro1- "Hey bro can you get me-"
Bro2- "-A Pepsi, got it bro."
Bro1- "Wow! Must have been bropathy."