"Neck and Giblets too" joke

little boy and girl at school were having lunch in the shelter shed.
"Tommy," she said, "I`m not eating any more chicken sandwiches."

"Why?" he asked.

"`Cause I`m starting to grow feathers down here," she said, pointing to the bottom of her tummy.

"I don`t believe you," he said. "You`ll have to show me."

Behind the shed they went, where the inspection took place.

"You`re right," he said. "I`ve been eating a lot of chicken also. Perhaps I`m getting feathers too."

"Well, I`d better have a look," she said.

After a lengthy examination, she looked up and said, "Oh, I think it`s too late for you. You`ve got the neck and giblets too."