Little Johnny

Little Johnny sees two dogs in the park going at it.

He tugs on his dad's shirt and says, "Daddy, daddy, what are those two dogs doing?"

Daddy quickly responds, "Son, they are making puppies."

Later that evening little Johnny sees his mom laying under his daddy. Johnny interrupts and says, "Daddy, daddy what are you doing to mommy?"

Daddy says, "Johnny - We are making babies".

Johnny pauses and thinks, then says, "Daddy, can you turn mommy over - I want a puppy".