Bacalhau is the Portuguese word for cod and one of the most recognised foods in Portuguese cooking, while esplanada means an outdoor terrace or cafe seating area. The phrase bacalhau na esplanada therefore paints a very specific everyday scene, which is why the clip travels easily online without needing a known film or song behind it. Portuguese speakers share it for food and summer posts, and other viewers pick it up as a cheerful shorthand for eating outside on holiday.