Once there were two farmers. One had a daughter and the other had a son. When thier kids were teenagers they started dating, and the two farners encouraged it. One day the girl's father went over to the other farmer's house and said that he didn't want thier children dating anymore. The boy's father asked, "Why not?"
The other farmer said, "Come here and I'll show you." In his yard was the girl's name written in pee in the snow.
The boy's father said, "Oh, come on, that's just boy stuff."
The other farmer said, "You think I dont' know my own daughter's handwriting?"