What you describe sounds like what the Germans call "doppelbock," or doublebock, which, as they explained it, was originally the thicker stuff at the bottom of the barrel, which the monks who brewed it drank during lent to give them the nourishment they needed while fasting.
Thus, I should think, the 5 brewskis you downed in '07 were the equivalent of two or three medium rare sirloin steaks.
The doppelbock we drank in the aught mid-60s in Kassel also had the extra alcoholic content, which you didn't notice so much because of the thick body of the beer. More than once I failed to remember how many I drank or how I got back to post when we were finished celebrating another day. My head tried to remind me the next morning, tho, without any of the joy the beer had provided earlier.