The joke behind the clip comes from one of modern football's defining rivalries: Bayern Munich versus Borussia Dortmund, known as Der Klassiker. Arjen Robben spent a decade at Bayern scoring decisive goals, the cruellest for Dortmund supporters being his 89th-minute winner in the all-German 2013 Champions League final at Wembley. Portuguese-speaking football fans turned that history into banter, and short mocking voice notes like this one — a fake apology from a Bayern man to Dortmund — circulate after every Klassiker. It endures because the rivalry never cools down.