Once there were two farmers. One had a daughter and the other had a son. When their kids were teenagers, they started dating and the farmers encouraged it. One day the girl's father went over to the other farmer's house and said that he didn't want their children dating anymore.
The boy's father asked, "Why not?"
The other farmer said, "Come here and I'll show you." In the yard was the girl's name written in pee on the snow. The boy's father said, "Oh, come on, that's just boy's stuff."
The other farmer said, "You think I don't know my own daughter's handwriting?"
The boy's father asked, "Why not?"
The other farmer said, "Come here and I'll show you." In the yard was the girl's name written in pee on the snow. The boy's father said, "Oh, come on, that's just boy's stuff."
The other farmer said, "You think I don't know my own daughter's handwriting?"
HAHA! I get it... Can't believe you don't get it... This boy was peeing, and the girl was holding that boy's penis in "handwriting" style. 
at first i didn't find it funny, when i read it again 
whoo-hoo.