A chicken farmer went to a local bar, sat next to a woman,   
and ordered a glass of champagne. The woman perks up and says,

"How about that? I just ordered a glass of champagne, too!"     

"What a coincidence, " he said, "This is a special day for me,
I'm celebrating."                                             

"This is a special day for me, too, and I'm also celebrating!,"
says the woman.                                                

"What a coincidence," says the man. As they clinked glasses he
asked, "What are you celebrating?"                            

"My husband and I have been trying to have a child, and today my
gynecologist told me I'm pregnant!"                            

"What a coincidence,? says the man. "I'm a chicken farmer. For
years all my hens were infertile, but today they're finally   
laying fertilized eggs."                                      

"That's great!" says the woman, "How did your chickens become
fertile?"                                                    

"I switched cocks," he replied.

She smiled and said, "What a coincidence!"