"Copy cat." What a dumb expression. I just spent a few of my life's most boring minutes researching its origin, and it seems that it may have derived from the way kittens have been known to imitate the behaviors of their mothers. Yeah... because that's a uniquely kittenish thing to do. If copying your mother's behavior is something only cats do, then why do I say "good glory" in the place of swearing? I think it's because my mom "swears" that way, and also because I'm apparently a cat.