If you're not a geek, you may not "get" this one. If you are a geek, you'll probably laugh and laugh....
Two missionaries are looking down into jungle clearing at hundreds of natives gathered around a stone likeness of a huge zero.
They strain to hear what they're all chanting, but finally make it out: "Nulll, nulll, nulll...".
"My God!" one says quietly to the other. "Is nothing sacred?"