you act the same way drunk as you do when you are sober
Alan is a bobby drunk.
1. in a state of intoxication caused by an inhumanly excessive consumption of alcohol, usually by drinking an unreasonable amount of alcoholic beverages, (usually followed by, with, or on) feelings of elation, boldness, and in general being a badass. This state of mind usually leads to embarrassing karaoke, hitting on women with boyfriends or who are drug addicts, and may result in fist fights or getting shot/stabbed.
"Dude you got so 'bobby drunk' last night that we almost got jumped by three huge guys because one of their drug addict girlfriends liked talking to you."