Naughtiness At Church

A few years ago on Christmas Sunday, I was attending mass as I always do. From my usual seat I can see most of the congregations faces. During the mass I couldn't help but notice a couple sitting in the front pew, acting somewhat strangely.

For context, I know this couple. They are married, in their early 40's and have kids.

Anyway. Throughout the mass I would find myself looking at them, in particular the woman. Every now and then I would see her making some rather odd faces. At first I thought she was yawning as she would open her mouth somewhat wide and then put her head down.
But after seeing it for so long it didn't seem as though that's what was going on.

It was what she would do next that made me suspicious.

Once in a while I would see her turn to her husband, put her head on his shoulder and seem to ask him a question.

And every time he would respond with what appeared to be a "No".

I didn't give it a tremendous amount of thought during the mass but afterward a thought did pop into my head.

Perhaps there was some funny business going on. Perhaps this couple was doing something rather risqué during mass. Perhaps involving something that they may have received for Christmas.

If you're not picking up what I'm putting down, I'm suggesting that she had some sort of vibrating toy either in her or in her panties and her husband was at the controls.
Rather bold of them to do so in a crowded church during mass. But I understand that the risk does bring a certain excitement.
I've felt it myself.

What do you think they were up to?