Watch Supergirl XXX: An Extreme Comixxx Parody for Free: How to Stream the Movie Online at 123Movies. . Earth's sexiest super XXX hero is a young co-ed from another planet. Supergirl barely escapes the destruction of her home planet, but her greatest challenge lies ahead—sorority life! With the help of her cousin, Superman, and her BFF, Barbara Gordon, Supergirl tries to pass as human. The only thing standing between her and a life of textbooks, keg parties and casual sex is Natasha Luthor, the Queen Bitch of the Tri-Pi Sorority. In Luthor's plan for world domination, Supergirl is the last piece of the puzzle.