A little boy and a little girl attended the same school and became
friends. Every day they would sit together to eat their lunch. They
discovered that they both brought chicken sandwiches every day! This
went on all through the fourth and fifth grades until one day he noticed
that her sandwich wasn't a chicken sandwich. He said, " Hey, how come
you're not eating chicken, don't you like it anymore?" She said, " I
love it but I have to stop eating it." "Why?" he asked. She pointed to
her lap and said "Cause I'm starting to grow little feathers down
there!" "Let me see" he said. "Okay" and she pulled up her skirt. He
looked and said, "That's right you are, better not eat any more
chicken."

He kept eating his chicken sandwiches until one day he brought peanut
butter. He said to the little girl, "I have to stop eating chicken
sandwiches, I'm starting to get feathers down there too!" She asked if
she could look so he pulled down his pants for her. She said "Oh, my
God, it's too late for you! You've already got the neck and the
gizzards!"