A group of guys were chatting with a good-looking girl and, somewhat improbably, asked her to climb this pole that was conveniently nearby. For whatever reason, she decided to do it.
When she told her mother what happened, her mother scolded her: “Don’t you understand that they only wanted to see your underwear?”
The girl was understandably upset at being very stupid and naive, and decided to show those boys a thing or two.
The next day, they repeated their request, and when she came home she was beaming. “What are you so happy about?” asked her mother. “I totally showed them. Today I didn’t even WEAR underwear.”