In Last Year: The Nightmare it looks like some adolescents got drunk on the same Swiss liqueur that we know from Donkey Kong Country — see the heart-shaped bottle with the Swiss cross in the lower right corner?
But the punishment for underage drinking is swift and appears to involve ripping out of spinal cords. Brutal but quite surely effective. Also, one must wonder if these kids played DKC when they grew up and that inspired them to become alcoholics. Someone at Nintendo should take note.