If you’ve seen the Coen brothers’ dark and very Jewish comedy A Serious Man, you’ll recall the scene about “the goy’s teeth”. A rabbi recounts to the hapless hero a story about a dentist’s amazing discovery of a message in Hebrew inscribed on the back of one of his patient’s teeth. It reads: “Help Me.” Or is supposed to read.

Actually, the production team got one of the letters wrong, as the brothers have revealed to the Jewish Journal of Los Angeles. So what does the dental message now spell (you can see it on the Flickr website)? As the rabbi in the film says, you’ll just have to “accept the mystery”.