John Karna in Premature (2014)

MTV's Scream television series may have ended its first season but series stars John Karna and Carlson Young also appeared together in the teen sex comedy, Premature. John stars as Rob Crabbe, a high school student ruled by his hormones in the worst way possible, as he discovers that every time he has an orgasm he restarts the same day, complete with his mother walking in on him in his stained undies. John appears in several shirtless scenes throughout the movie and even gets a partial rear nude scene as he masturbates at school in order to escape bullies. His only hope of escaping his time loop is to find his true mate.