This reminds me of those old Bruce Lee and martial arts movies: drunken fist, anyone?
Basically, the monk gets drunk and power ups and kicks the other dude's butt! It's just real fun doing that! Imagine, your enemy's wondering: "Is this guy a loon or something? Why's he got so many bottles of wine and whiskey strapped to his mule?"
Then... he looks in shock as the monk gulps down 8 bottles of wine at one go and rushes towards him.
Oh and may I also add that the monk's fighting bare-handed?