Ha-ha. How much time you got?
Someone already mentioned the blood doctrine. There's one absurd aspect of it that I brought up to a JW recently. Let's get this straight, they are allowed by the human leaders of the religion to inject the blood fractions of satanic, worldly people into their body, yet are forbidden to use their own blood fractions to sustain their life? The response I got to that question was, "That's because blood must be poured on the ground". To which I replied, "Except the worldly blood you're allowed to inject into your body, right?" I could practically see his brain shudder as he momentarily thought about it and then quickly changed the subject. I don't blame him, how on earth could you logically defend that kind of nonsensical hypocrisy?
I can completely understand JWs having blood phobias and rejecting all fractions even though their leaders now allow them. It's a doctrinal and logical mess.