River Plate youth player Gianluca Simeone follows Spanish football very closely - after all, his father is none other than Atlético Madrid boss Diego Simeone.
And as expected, Simeone Jr supports Los Rojiblancos - so much so that, following Real Madrid's Copa del Rey elimination by Celta Vigo on Wednesday evening, he was quick to enjoy the result on his Twitter profile.
Reacts to Real exit with 'waving goodbye' emoticon
After the final whistle at Balaídos, he raised eyebrows among users of the social-networking service by publishing a tweet containing only a 'waving goodbye' emoticon, in a message clearly aimed at Atlético's city rivals.
Simeone later deleted the post from his account.