There's a track on Marvin Gaye's "Let's Get It On" album called "You Sure Love to Ball." No moaning needed there; the title, repeated frequently in the lyrics, get the message across just fine. Come to think of it, did Motown ever use sex sounds in its recordings? I don't think any of the soul songs mentioned in this thread were products of Berry Gordy's hit factory.And then there was "making love on the green grass behind the stadium..."
No moans, but fairly descriptive.
("You Sure Love to Ball" had some success on urban formatted radio stations, but not Top 40, event though "ball" has been an acceptable substitute for the f-word for some time, as "Good Golly Miss Molly" never had its lyrics changed or bleeped for radio.)