I've had some scenarios in my head that I've never actually seen depicted as a scat porn or hentai, that I'm wondering if anyone else has seen. This picture is the best kind I could grab that's close to this:

Any scenarios where a shy couple is put into a situation where the girl has no choice but to shit on her bf or gf?

Is there anything where a person kidnaps a couple, then ties them up in such a way where the guy is on the ground and the girl has her ass in his face, or is sitting on him, and the person tells them that he's not going to torture or kill them, he's just going to observe. He'll feed them and everything, but won't remove them from that position.

The scene goes through a mental progression where at first the couple is angry, thinking about how to escape, the guy acting tough and being sympathetic, but then as the hours go by, the realization of the issue where she's going to inevitably shit on him dawns on them.

It would be an almost mindbreak scenario, for the girl mostly, but also possibly the guy depending on how disgusted he is.

Really, looking for any scat situations where the two people are forced to doing it to each other, with a third party getting off on watching it take place.