Porno karaoke
AFP reports: "Germans are screaming, moaning and panting for the latest nightlife craze -- porno karaoke. . . . Players pair off in male-female teams as a XXX film is loaded into the projector. With the sound turned off, each duo is handed two microphones and has one minute to provide the aural fireworks for the action on the screen."
That would be wonderful. Provide sound to the xxx film shown. They can just mimic what ever is shown in the film and record the resulting sound.