"How Else Ya Gonna Learn" joke

A father and son went fishing one day. As they sat in the boat for a couple of hours, they did not have much to do. The son started thinking about the world around him. He began to get curious. So, he asked his father some questions.

"How does this boat float?"

The father thought for a moment, then replied, "Don't rightly know, son."

The boy returned to his contemplation, but soon came up with another one, "How do fish breathe underwater?"

Once again, the father replied, "Don't rightly know, son."

A little later, the boy asked his father, "Why is the sky blue?"

Again, the father replied, "Don't rightly know, son."

Worried he was going to annoy his father, he said, "Dad, do you mind my asking you all of these questions?"

His father immediately assured him, "Of course not, son. If you don't ask questions, you'll never learn anything!"