What makes a Madridista? What makes a Colchonero?
Madridistas - the passionate fanbase of Real Madrid - will be hoping that their side can lift yet another Champions League title this weekend, but the Colchoneros, Atletico Madrid's equally feverish support, know that Diego Simeone's men are just one win away from the trophy.
The two sides are set to clash on Saturday at San Siro and each set of fans has been discussing exactly why they support their team. Watch the video above!