Humour is part of good sex. If you're laughing, there's no pressure to perform, no stress, no rating. Some of its jokes don't work in English, though. (Neither do the compliments of 1000BC culture: e.g. `Your nose is like the Tower of Lebanon'. Don't try that one.)

2. It's sensual.

They describe how sight, sound, smell, taste and, of course, touch start them up. It's imaginative.

3. There's a lot of kissing and romancing and foreplay.

(Not just `wham bam')

4. The Lovers are proud of each other.

`Parade me on your arm.
Wear me like a medal for all the world to see
Our private love.' (8:6)

5. It's little-known.

Even The Bloomsbury Anthology of Erotic Literature and others don't mention The Song of Solomon because no-one expects erotica in the Bible!

6. It's explicit, but tasteful.
(Some translations tone it down.)