Qué es esa vara, mae is Costa Rican slang, with vara used for thing and mae used as a familiar form of address similar to dude. The phrase circulates online as a short reaction sound, shared in memes, voice messages and short videos where Spanish speakers want a quick, funny way to ask what is going on. Its appeal comes less from a single famous clip and more from how instantly recognisable the local slang sounds, which helps it travel beyond Costa Rica among Latin American audiences who enjoy the phrase even when they do not use it themselves.