An 8-year-old girl went to her dad, who was working in the yard. She asked him, "Daddy, what is sex?"
He was surprised by the question, but decided that if she was old enough to ask, then she was old enough to get a straight answer. He proceeded to tell her all about the birds and the bees. When he finished, the little girl was looking at him with her mouth hanging open.
Her father asked her, "Why did you ask this question?"
The little girl replied, "Mommy told me to tell you that dinner would be ready in just a couple of secs."