Leo: Where's Raphael?
Mikey: Doing stuff.
Leo: I don't like the sound of that. Where's Donnie?
Mikey: Stopping Raph from doing the stuff.
Leo: Casey?
Mikey: Trying to stop Donnie from stopping Raph from doing the stuff.
Leo: ah I see... and what are you doing?
Mikey: Stopping you from stopping Casey from stopping Donnie from stopping Raph from doing the stuff.