Some pornographic films use an artificial semen substitute to simulate or enhance creampie shots. In some creampie films, sexual activity, including internal ejaculation, are followed by performers licking up the semen that has dripped from their bodies. Depiction of creampie scenes has become a popular subgenre within heterosexual pornography since the turn of the 21st century, and feature both vaginal and anal ejaculations. Creampie scenes depart from heterosexual pornographic convention in favor of a depiction that more closely mimics sexual activity as performed in ordinary life they have been called the 'counterimage' of facials. In straight pornography, sexual activity is often followed by a facial, pearl necklace or other visible ejaculation. The use of the word creampie to describe such scenes originated in U.S. Internal ejaculation shots are a comparatively recent development in pornography they are not found in early pornographic films.