From the 5/15 WT, page 5, paragraph 10.
It is not Scripturally required that marriage mates limit sexual relations to efforts to produce offspring. Such intimacy can rightly fill emotional and
physical needs.
But perverted practices certainly do not please God. Christian husbands and wives will undoubtedly want to handle this important aspect of their life with tenderness, allowing them to display genuine affection for each other. And, of course, they should avoid any actions that would displease Jehovah.
So lets break this down a bit. The article is targeted at married people, the title is "Do You Really Appreciate Gods' Gift of Marriage?" so its not something for teenagers or unmarrieds who might be fooling around behind Jehovah's (or the elders) collective back.
First, the premise of 'perveted practices' is introduced. What practices? Oral sex? I'm fairly sure that is the target, though they won't say it, a quick check of 'perverted' on the WT CD quickly brings up several articles related to that kind of nasty behavior. But wait, you just said that intimacy can rightly fill emotional any physical needs!
So how does this work for Jehovah?
Does he look down with a smile on his face when Jane and John JW start getting it on, but quickly starts to frown once Jane starts talking to the microphone? After all, according to the last sentence there these kind of actions would "displease Jehovah"
Just wondering...