Bang drunkeness is easily to spot. You don't care about anything but the crotch of your "love" and you will cancel plans, stand up friends, miss work, birthday parties, meals and social interaction with other human beings. You spend your time balls deep. And you don't give a toss about anything except banging the hell out of your "love"
You tend to sober up when they start talking about other things and telling you their useless opinions.
"With Rose I bet. The guy is totally bang drunk"