A little girl was leading her dog through the park when an old man stopped her, saying, "That sure is a pretty dress you're wearing." The little girl smiled and said, "Thank you, sir. My mama bought it for me. This is my dog Porky." The old man chuckled. "I'll bet a nickel I can guess why you call him that." She shook her head. "I'll bet you can't." He laughed and said, "You called him Porky because he's so fat." She shook her head. "No sir, we call him that because he f*cks pigs."