Now, where did he hear that?

When David gets upset and acts out, Mikey gets aggitated. At a minimum, he starts saying things that, I think,  are his way of explaining/coping with David's behavior.

Yesterday, David got upset about something, and fussed - which upset Mikey. Mikey started muttering his usual coping things, "David is sad. David is a crier." Then he said, "David is On the Rag."  !!!!!!!!!