I think you studiously missed the point of the comments. If you want your teenagers to go see Bat Boy, by all means, let them go. You can have the pleasure of trying to explain some of that stuff to them afterward.
There is no comparison between Grease and Bat Boy and your efforts to make one reeeeaaaaalllyyy stretches the limits of credibility.
But, the problem that you seem to be overlooking is that teenagers are subjected to enough pressure and exposed to enough garbage - this isn't anything they need to be exposed to. There are still enough excellent plays that would provide a better, more thoughtful, more enlightening and more entertaining experience for them.
And your analogy to God pushes the extremes of ludicrousness. Yes, there are good and evil in the world but, in Christian religions, we take it on faith that evil exists and that Jesus came to earth to wash away our sins. God doesn't require us to participate in monthly perversion to recognize the difference between good and evil. That you are so blase about the terrible messages that Bat Boy presents tells me that Satan has already gotten a pretty good grip on you.
IOW, we don't have to experience evil to know that it exists. There are some things so obvious that they defy the need to experience them. Bat Boy is one of those things.
I guess we will have to agree to disagree on all points.
I am good with God and strong in my Christianity. It is not your place to pass judgment on me or others. Your comments are hurtful and offensive.
"He that is without sin among you, let him first cast a stone at her." John 8:7