A box social in the United states is a form of fundraiser, wherein donated lunch boxes are auctioned off for a cause (often a civic, church, or school charity). Usually a woman creates a lunch, which is then auctioned off. Varying somewhat, the custom was for the person who had prepared or donated the box lunch to go on a date with the person who won the lunch with the highest bid, or at the event sit with that person and share the lunch. See also Awkward, Old-Timey.
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When it's on your head, it's pretty. Once it's off your head, everyone thinks it's disgusting. See also Body.