Replace all his Wizard of Oz dolls figurines with little dildos dressed as the Scarecrow, Dorothy, The Cowardly Lion, etc. You know, a little barbie dress for dorothy on a pink one, paint one green to be the wicked witch, that kind of thing.
Or just scream at him, "And don't think I'm going to accept any more of your little late-night phone calls now that I don't work for you, you scat-eating freak!" on the way out the door. Whatever.