Tooth flippers

An hour or two ago I dreamt that I and some coworkers were missing our top rows of teeth. On the bare gums in the tops of our mouths, we wore "reversible" dentures. If we wore the dentures one way, it looked like we had a perfect row of white teeth. If we flipped them around and wore them the other way, it looked like we had a row of perfect off-white teeth.... —Crude Futures