Ralphael: Ninja pizza. What do you know? Michelangelo: Rock, dudes, do you realize what this is? Donatello: The crucial piece of evidence we were looking for? Raphael: The clue which will lead us to the heart of the evil ninja empire? Michelangelo: No, even better! It's a place where we can get some pizza! Raphael: Right on!

Donatello makes a great observation.