As children, we Catholics were taught that god is everywhere, and I'm pretty sure most Christians believe the same. You might enjoy asking Christian friends to ponder that conviction the next time they have their septic systems pumped out. I'm all for coming up with questions that serve to demonstrate how ludicrous religious belief systems are and then sharing those questions with the faithful. Another query I'm fond of asking American believers is "Where heaven?" In response, they almost invariably point skyward. Then I ask them if they'd still point in an upward direction if visiting China on the other side of the world. It takes them a second or two, but they suddenly realize that while in China, they'd be inadvertently pointing in the direction where they normally think hell resides. This is all a waste of time on my part, because the deluded aren't, after all, swayed by logic. Nevertheless, I've had some enjoyable times poking holes in their "reasoning". By the way, if you really want to rankle a Christian, ask if they thought the adolescent Jesus masturbated or had wet dreams. I once nearly got thrown out my religious (Catholic!) uncle's home because, on one Easter Sunday, I postulated that the infamous "agony in the garden" was really a severe attack of diarrhea due to food poisoning.