Spejbl's Case (1930)
A commercial promoting cast-iron enamelled bathtubs produced by ČKD [Czech-Moravian Kolben Daněk] Blansko and the Shareholding Ironworks in Komárovo. Spejbl forces his son Hurvínek to bathe every Saturday in a trough, but the son protests that the trough is outdated and unfit for bathing, because he