Movies spotlighting female masturbation solo scenes are also included as part of the category. Lesbian themes in erotica date all the way back to the frescoes of Ancient Greece. Filmed pornography made all-girl porn part of its standard repertoire from the s onward. As is the case with most genres, much of lesbian porn is designed for a male audience. These movies often feature actors who are not necessarily lesbian by orientation but who perform in such roles in porn.