Fun fact: a springlock suit is a fnaf thing which is an animatronic shell (commonly themed as a fun kid-friendly bear or bunny) that features an endoskeleton that can be wound up and retract to make room for an employee (invented for money saving oppurtunity: don't need to spend money on both animatronics AND mascot costumes) But when the endo assembles back into animatronic mode with the person inside, that is what we call a "Springlock." Very painful.
