Commonly defined as a bro whom which everone knows. A bro whose acceptable to many different groups of bro's. Often this term can be be used to describe the leader or alpha male of a bro group, one who tends to lead the group(s).
Chad- "Sup brofamous, you wanna chill, i got some natty?'
Mark- "Nahh broski, im with the other bro's, maybe nextime, we can play some gamecube..."
Wu- "What the fuck is up brofamous?"
Chong- " Just getting the bro's together.. can you get some natty ice?"