A three-year-old walked up to

A three-year-old walked up to a pregnant lady while waiting with his mother in the doctor's office.
He inquisitively asked the lady, "Why is your stomach so big?"
She replied, "I'm having a baby."
With big eyes, he asked, "Is the baby in your stomach?"
She answered, "He sure is."
Then the little boy, with a puzzled look, asked, "Is it a good baby?"
She said, "Oh, yes. It's a real good baby."
With an even more surprised and shocked look he asked, "Then why did you eat him?"