Lots of good comments, Satan_Klaus, and I agree with a lot of them, especially that this whole thing seems premeditated. (Nothing wrong with that.) Although as it goes on and the author has to dig a little deeper for ideas, S's thought process is more revealed.

But I'm with Clevernick that using the butt plug instead of the Jesus was even better, because of the mindfuck. In one small way, S was controlling Lynn's thoughts (she thought she had Jesus up her ass), which is hotter than actually doing it. Just my opinion.

I haven't even earned the suspension of disbelief that comes in a musical film, where everyone spontaneously starts singing and dancing, without interrupting the story line. I'll have to put this one down to artistic license.
LOL Musicals can really suck you in, can't they?