The video circulating around a gleeful Argentina has not been lost on the long-suffering Brazilians, just across the eastern border. It depicts Sergio Aguero and Gonzalo Higuain dancing around their World Cup training base with Argentinian fans, singing the new tune on the country's lips.
Brasil, decime que se siente, tener en su casa a tu papa - Brazil, tell me how it feels, to be bossed about in your own back yard - begins the song, which develops into a musical excursion around the events of the Italy World Cup in 1990, when a relatively weak Argentina side blessed with Diego Maradona beat the Brazilians 1-0 in a round-of-16 match which they entered without a prayer in Turin.
"Even when years go by" continues the lyric being sung by Argentines from the hills of Belo Horizonte to the Metro system in Buenos Aires, "we will never forget that El Diego 'did' you ... You've been crying ever since Italy up until today. You're going to see Messi. We're going to bring the Cup home. Maradona is better; greater than Pele ... " And if that manifestation of the brash, noisy South American neighbour wasn't enough, the Argentines were yesterday swarming over the Brazilian border in what must be one of the great sporting mobilisations of all time. A total of 100,000 Argentines were expected in Porto Alegre today at the only World Cup venue reachable by road from their country, where Lionel Messi and teammates needed a point to top their group and book a second-round appointment with Ecuador or Switzerland.
Then there was the question of accommodation. A campsite was thrown together at the Parque Maminia - the location usually reserved for the annual celebration of how this region of Rio Grande do Sul once fought for independence from Brazil.
But the invasion has also sharpened Brazilian thoughts about Argentina, which they would rather have kept out of mind until next month, given that the two titans of South America cannot meet each other in this competition before its final.