Here's a brainteaser for you:
You are skeptical about the efficacy of an alternative medical treatment. In fact, you believe said treatment works through the mechanism of the placebo effect. You do, however, accept the physiological reality of placebo. Indeed, you have the feeling that placebo is a legitimate therapeutic modality - a sugar pill works better than not doing anything at all. If you persist using said alternative medical treatment to gain the desired effect of placebo, is this cure still a placebo?
Anyway, I used this logical twist to convince my wife to try the generic version of Airborne. Evidently, if it wasn't invented by a schoolteacher, it costs $3.00 less for 120% of the doses. Then I asked the same question of the checker. He brought it upon himself by pointing out that we were trying the generic... Now he's thinking, "What a nerd."