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."