A man went into a local tavern and took a seat at the bar next to a woman patron. He turned to her and said, "This is a special day, I'm celebrating." "What a coincidence," said the woman, "I'm celebrating, too." She clinked glasses with him and asked, "What are you celebrating?" "I'm a chicken farmer," he replied. "For years all my hens were infertile, but today they're finally fertile." "What a coincidence, the woman said. "My husband and I have been trying to have a child. Today, my gynecologist told me I'm pregnant! How did your chickens become fertile?" she asked. "I switched cocks," he replied. "What a coincidence," she said.