Our Beau Bo is 4. He is going through a stage of being fascinated with, erm private bits and is very fond of running around in the nude. We are not a prudish family at all and it's quite funny to see him casting looks at various family members "bits".
The other day he was in the garden running around nude when I called him in and asked him to get dressed. He asked me "why" to which I replied "Because if you don't the a blackbird will come and peck that worm off!!!!"
He looked at me and said "well Daddy better not go naked in the garden then, otherwise the blackbird will get his hairy caterpillar"