I was one of those people with an insane BAC that would be upright, walking and talking. Last time I was intoxicated and had the police called on me, blew a .54 and could still recall memorized phone numbers of friends to call, my birthdate, my address, the whole shebang.
I'm 5'6" and at the time was 170 lbs; not tiny, but not huge either. My BAC got that high from a 24 pack of beer, 2 bottles of wine, a 1.75 of vodka, and a bottle of tequila, consumed in a matter of 16 hours.
I absolutely should be dead right now. Alcoholism is a horrible, horrible mental illness. It is pure insanity, and I am forever thankful and grateful that I don't have to live that way anymore.