Lunar Lust (1990)

They've been right all these years - there is a man on the moon. Well, sort of. Actually, there are women on the moon, and as it turns out, they're very, very nice women. They look down from the moon and see all us poor mortals and take pity. They see earth males, for example, not getting any sex to relieve all their kinky urges and suffering terribly because of it. Being such kindly space creatures, they decide to come down and take matters into their own hands for the good of the universe.