The only conversation parents need to have with their children about the tranny stuff should go somewhat like this:

When people tell you that you can change over from boy to girl or vice versa, they are lying to you. They do this because they want to do horrible painful things to you because they are bad people and they hate you. They also want you to agree to the horrible things. Avoid these people, never agree to anything they say, and if you cant avoid them please tell me about them, and I will take care of it.