Drunkherd

That guy at the party who doesn't get plastered, and spends most his time making sure that those who DO get plastered don't fall out windows, make out with random strangers etc. Often the drunkherd will carry the completely wasted back to their dorm/home/cardboard box. This is usually done out of a sense of responsibility combined with a dislike for alcohol. The drunkherd is by definition a benign, if somewhat puritanical, figure.