When you're old enough to write a book for children, by then you'll have become a grown up and have lost all your jokeyness. Unless you're an undeveloped adult and still have an enormous amount of childishness in you.
When you're old enough to write a book for children, by then you'll have become a grown up and have lost all your jokeyness. Unless you're an undeveloped adult and still have an enormous amount of childishness in you.