Naked Run
A punishment for losing a beer pong game so badly that you have to run around the building completely naked. It's extra embarrassing if you're the only one left and everyone laughs at you.
My friend lost a beer pong game and had to run around the building naked. He got chased by the whole class.
I lost a game and had to run around the building in nothing but my birthday suit. It was the worst.
My brother got caught in a Naked Run and had to run around the gym with no clothes on. Everyone laughed at him.