This year I did a fairly bad job of carving a jack o'lantern. I marked off the features with an indelible marker, then decided that they were too low. I carelessly cut across the top of the mouth, not outlining the teeth. As a consequence, Jack has badly applied eye-black (and mouth-black), and a couple of dental implants. Of course, in the dark that doesn't matter much.
It occurred to me, though, that I had a large, sound pumpkin, with room enough to carve another face on the back side--a Janus-faced pumpkin. One could carve contrasting faces, say masks of tragedy and comedy. Or one could just cut out a mediocre jack o'lantern face, not better or worse, nor deliberately different. Yet I wonder whether the cross-draft would burn down the candle faster. Perhaps I will carve such a jack o'lantern next year.