obviously it is the type of results that raise myths, and/or make bullrun memes and seems to influence economies...
... a little credibility for the winner, Girona was presented with an opportunity, they got it. Girona are there to complete the 20 teams, but also so that every 76 years these things happen.
The "soup" had its seasonings. Real Madrid did not play with the starting 11, Etc. eTc. and etC, so, perhaps if they lose by one goal, there would not be such a scandal (Meme) the thing is that we had 6 goals in a game in which we did not expect it.
If the result would have been 1-0 in favor of Girona, the headline is Real Madrid lost, blah (Etc), blah (eTc), blah (etC) but with this result we must give its fair value to the Girona.
This result is a Meme for Real Madrid, for Girona it is history, one they will remember forever.
He probably doubled his market price with this performance. There is very few players that managed to score 4 goals against Real. I belive I read somewhere there are 4 and interestingly enough only one that still plays football is Lewandowski from Dortmund days. Maybe Castellanos to Barca soon as well? 
