Blue Magic(1981)
OVERVIEW
Candida Royalle is a woman with a past a long, long past. Rumor has it she's lived for a few hundred years. The question is how she's managed to remain such a luscious piece of woman flesh after three centuries. That question gets answered when she invites three couples over to her ritzy mansion for a dinner party. Things quickly slide from cordial dinner conversation to kinky wife swapping and group groping. The secret to eternal youth, it turns out, is sex, sex and more sex.
TAGLINE:
They were invented to act out their lust. You're invited to watch.