A total brody that gets really wasted and proclaims everyone in the room his "bro". Usually a frat member, a bromandude is composed of 50% man, 50% dude, and 100% bro.
BroManDude: "You guys are all my bros.*pointing to each person* Bro. Bro. Bro."
Terry: "Did you see that BroManDude?"
Dave: "Yeah. He was a complete douche."
The epitome, I mean this is the apotheosis, of lame frat boy terms. In most cases used as a musing of such toolbags, but sadly..oh how sadly, in many cases; is not. Of course, the only time such an utterance is expelled without intent of joke, is by sufferers of severe brain damage, in most cases due to leakage of placenta
Henry-What's good homiebuddyman!
(Collectively)Haha but really what's up?
b)Doctor to infant:That's not a crazy straw, its your mothers umbilical cord!...15 years later...Chris:Duh hey what's up bromandude!