Alien Catnip / I Can't Believe It's Not Heroin: Plushies can get addicted to washing powder if they have to go into the washing machine too often (which is the case if they get dirty).
Badass Adorable: Is there a better example for this than a fighting plushie?
Be The Ball: The unarmed combat technique "Balduin's basketball", which does exactly what you think it does.