So Griffin is teaching Lucy the art of dress up. I know, your terrified by this powerful knightress (or armed princess?)! She even has a...well, it's a saw, but she is pretending it's a sword, stuck in her pocket just like Griffin does. Although, Griffin usually has one sword in a pocket, one in the front of his pants and one in his shirt. I think he thinks its cool to reach behind his head to get his sword when confronted with a opponent.