This is the truth! LOL, got into an "discussion" with some believers at a local bar regarding the Flood of Noah. They did the whole dismissive thing: "I was an atheist too until I did some research so I know where you're coming from..."
I told them, funny -- I was a Christian apologist for 52 years, started churches, preached, led people to Christ, was a missionary ... and then my own eyes were opened.
They never know what to say at that point because I know their bible and their stories and their thought processes better than they do.