The likelihood of serious liver damage is incredible here, because the "stop" mechanism never kicks in.
According to a friend who is a doctor, it is very difficult to kill your liver with alcohol. Most of the cases they see are all-day liquor drinkers who mix it with drugs. Usually, alcohol drinkers die of something else first.
People have said that, among his other gifts, Babe Ruth had that ability.
I've always been very grateful (though perhaps not at the worst moments during a hangover) that I have no tolerance for buckets of booze!