bizarre exchange overheard on the way home from the subway

A mother and little girl walk toward me. On their way they pass a house with an open door. The girl looks in the open doorway and says, "ooh, look a cute doggie." A woman comes out the open door and is sweeping the area around it. The mother looks in the doorway and says, "that's not a doggie, that's a meow." Then the woman sweeping, who I'm assuming is the animal's mistress says, "that's not a meow, it's a banjo. Oh, I mean it's not a banjo, it's a cat." By this time I am in front of the doorway and notice a small black and white cat rubbing itself on the door frame seemingly unmoved despite being called both a dog and a banjo.