A person who abuses either bro privileges (e.g. drinking your drank, grubbing your munchies, toking your stash, etc), the use of the word bro, or, oftentimes, both.
"Hey brah," Edward Scissorhands said in between sips of The Hulk's beer, "you should load another bow-- oh hey, bro me some of that pizza, bro bro."
"Hulk smash! After munch time."