To the tune of Santa Claus is coming to town:

♪ Mancs better watch out, Sp*rs better not cry. Better not pout, I'm telling u why. Santi Caz is coming to town.
He's from España, he is an idol. He's now a Gooñer, we'll win the title. Santi Caz is coming to town. ♫
He sees u when ur running, he knows ...