True on both fronts.
I would have still posted that receipt anyway, but without a single identifying piece of information on it.

It's funny regardless, and doesn't need to have blame attached to it.
I hear that churchgoers can be the worst tippers. Some folks I know who were servers at a restaurant next to a church, hated the post-Sunday mass crunch. Tons of people would come in, but many of them would leave church brochures in lieu of tip.

Sure, Jesus might save you, but it ain't gonna pay the rent!