i'm trying to find an old porn from probably the late 70s or early 80s. the main premise is two couples in a living room type setting sharing sex stories they had heard, and each story is a different scene ... then they end up in a couple swap to close it out.

the notable scene i remember is from an airplane - short brown curly haired stewardess starts going down on passenger then yada yada ... and there is a guy in one of the back rows filming it on an old vintage 70s style camcorder.

any idea what the name of the film is?