Ah, the old "Pretend a Child is being Raped in a Tent Pie-in-the-Face" gag, what a classic.
Here I was utterly bored with the usual put up a billboard with a face sized hole cut out that says, "Don't Look!" and then pieing people who looked anyway. Bah, how boring to humiliate in public people actively disobeying a warning, let's turn up the notch and pie people for simply making sure what sure-as-fuck sounds like a child being raped isn't the case.
I believe that in no time of the prank is passed the idea of being a child that is inside the tent. It just seems like a normal sex scene to an adult woman moaning, almost like a pornographic movie. Maybe you have confused the presenter's laughter.