Blackkk

A close-up of a person's lips begins with them slightly parted, then the lower lip extends forward as if licking, followed by the lips closing and filling with a thick, black, glossy substance that covers them completely. The lips remain fully coated in the black substance before the scene reverses, showing the black substance receding and the lips returning to their original state. The setting is a close-up on a face with a plain, light-colored background.