Love in 3 D

Love in 3D German Liebe in drei Dimensionen is a 1973 German adult comedy film directed by Walter Boos. The film was dubbed into English for American audiences. As compared to other mid1970s adult films that were shot in 3D, Love in 3D stands out for several reasons. It was shot on 70 mm, very unusual for a low budget adult film. The movie itself contains several notable 3D scenes as everything from oranges, water, and breasts are thrust out toward the audience. One standout nonadult scene involves a ride in an old ghost house.

Source: Wikipedia