Door & Key

A young girl in a red and white striped hat and a long nose smiles while sitting by a pond with white water lilies, then the scene cuts to a woman with blonde hair looking at the camera, followed by a close-up of her lifting her blue dress to reveal a metal chastity belt with a padlock, which she then unlocks with a large ornate key, after which the girl reappears holding the key triumphantly against a blue sky.