"The Melon Helm of Wisdom" - This was basically a punishment for giving bad advice. The guilty party would have a hollowed-out melon placed on their head, with holes cut for their eyes and mouth. They had to walk around the village giving advice to people while pretending to be "The Wise Melon Sage" and be a target of public ridicule. Villagers would often pelt the Melon Sage with smaller melons to show their disapproval.

EDIT: Oh I just saw the Musk comment and thought this was just a general question. For Musk specifically, look up "scaphism".