The questions “Have you ever used Derbisol?” and “How often?” sometimes appear along with questions about alcohol, cocaine, and marijuana use on youth-risk surveys for students. Derbisol is a fictitious drug devised to test the reliability of the responder. In one survey, 163 of 894 students said that they had tried Derbisol—or 18.2 percent.

In 1387 the physicians to Charles II of Navarre, in order to treat his illness, soaked his sheets in aqua vitae, a distilled wine, and wrapped him in them to enhance the curative power that the liquid was supposed to possess. The sheets were then sewn shut by a maid, who, instead of cutting the final bit of string, set a candle to it. The alcohol-soaked king went up in a blaze and the maid ran away, leaving him to burn to death.