A man came home from work sporting two black eyes.

"What happened to you?" asked his wife.

"I'll never understand women," he replied. "I was riding up in an
escalator behind this pretty young girl, and I noticed that her skirt
was stuck in the crack of her ass. So I pulled it out, and she turned
around and punched me in the eye!"

"I can certainly appreciate that," said the wife, "But how did you get
the second black eye?"

"Well, I figured she liked it that way," said the husband, "So I
pushed it back in."