I've been choc-rickrolled!
As a late birthday gift, AJ (who flew into DC last night) gave me a gimmicked chocolate bar that rickrolled me the moment I tore the wrapper open. If you look carefully you can see a speaker glued to the foil. The circuitry consists of a solid-state audio chip that can record a few minutes of sound, the necessary driving circuitry for the recording chip, and a miniature amplifier that boosts the recording to audible levels. A cleverly placed nonconductive tab was pulled out of position when the wrapper was peeled back, closing the circuit and dropping the bomb on me.
Well played, AJ. Well played. You topped the rickroll in FORTRAN.