A six-pack is on the excessive side, but you'd never be anywhere close to drunk unless you squeezed them into a short evening. For a doctor to do this without warning to a patient is nearly beyond belief.
According to who? In what period of time? What body weight? Before or after eating a meal? I would admit drinking a keg a day is a little EXTREME but 6 beers?
And here I am thinking that you are from Texas after all of these years.
Back in the day, we used to polish off a six each on the subway from Grand Central to Yankee Stadium.