I wasn't raised a Christian (or with any religion, really) so it wasn't until I was an adult taking a World Religions class that I learned that some Christian sects (is it the Catholics? I forget...) believe that the communion wafers and wine are literally transmuted into the blood and flesh of Christ. That gave me a moment of squick. But then again, there's a lot of squick in the Bible in general... Not being raised in the faith, Christianity just confuses the hell out of me.