Ok, here is a problem...

There is a religious 'documentary' orbiting youtube (I will state the title at a later date)
After roughly 1 hour of non stop laughing and aggression directed at the blatant lies and distortion of EVERY statement made from beginning to end, I have decided to write a book dismantling every single claim and proving it false.

So the question is ...
How can I write a book about this specific 'documentary' (or atleast make know that this is a rebuttal for the readers) without getting sued to kingdom come?