Definition: Once in a blue moon = doesn't come often. A penny for your thoughts =what are you thinking about.
Example: Your the fastest person in the world. Your so good your the best.
Example: I've been playing with cool. You are picking on the weaker man.
Example: Boom, pop and splash.
Example: The stars are smiling and winking at us.
Example: Voracious volcanoes vibrated the valley very violently. Eagles live in the east and eat eggs.
Example: Your like the best guy in the world. Your as rich as the prime minister.