lol, I just asked them questions on the inconsistencies in the bible, and their belief, and how they justify them. (I used to be Christian, so I know my way around fairly well)
I spent a good deal on the foundation of the value and importance of evidence and logic, as well as just the general absurdity of many of the beliefs. I don't want to offend anyone, but yeah.
I wouldn't so much call it yikes, they were actually pretty happy about it. Unfortunately, when you get a deep belief such as religion changed, you often get upset like you've been lied to or wasted your time. Then again, feeling like you made a better choice in your belief system is always a good thing to feel.
It just started off randomly from something, just a typical conversation, and then just got into questioning and a mild debate. Then it got more serious, and then they started to consider my perspective, and trying to understand it like I do, and it made more sense to them than what they had previously thought. When I say that, I don't mean to say that I have it all figured out, that's just what ended up happening. But yeah.