At an interview at a school for especially gifted children, six-year-old Vovochka was asked to tell how a bus differs from a trolleybus. Vovochka did not hide anything from his aunt and honestly told her that the bus runs on an internal combustion engine, and the trolleybus runs on an AC electric motor. It turned out
– nothing like that! Just a trolleybus with horns, and a bus without. And there’s no point in fooling your aunt’s head!
