Here's a cute ad from the 1960s. "Visst Katten, 'Apotekarnes' vatten" it declares, with a see-say illustration of a cat. The expression "Visst katten" does mean "oh yeah, cat" but it's more of an exclamation, like 'Oh drats!" implying the reader, commuter, forgot to buy Apotekarnes water to bring home for supper.
Image taken in 1960, photographer unknown. Station "Odenplan"