An 8-year-old girl went to her grandfather,
who was working in the yard and asked him,
"Grampa, what is couple sex?"

The grandfather was surprised that she would ask
such a question, but decided that if she's old enough to ask the question, then she's old enough to get a straight answer.
Steeling himself to leave nothing out, he proceeded to tell her all about human reproduction and the joys and
responsibilities of intercourse.

When he finished explaining, the little girl was
looking at him with her mouth hanging open,
eyes wide in amazement.

Seeing the look on her face, the grandfather
asked her, "Why did you ask this question, honey?"

The little girl replied,
"Grandma says that dinner will be ready in just a couple secs."

Oops...
Grampa What!?!