Payaso literally translates to "clown". It's a striking and somewhat unexpected word to find in a song, especially when used metaphorically.
In this song, the word is used to describe a deceitful and manipulative person. The singer realizes that the person she once admired was nothing more than a "payaso perdedor" (a loser clown), someone who made a fool of her and others. This powerful metaphor conveys betrayal and disillusionment, making it a memorable and emotionally charged word.
Pimpinela's "Payaso" is a powerful song about realizing you've been fooled by someone you thought was special. The singer believed this person was a "ganador" [winner] even when others saw their flaws. She says, "Mientras todos me decían te está marcando la vida para mí eres el mejor" [While everyone told me life was marking you, for me you were the best]. She gave herself completely to this person, hiding their defects and trying to see perfection in what was always a mistake.
The turning point comes when she "desperté" [wakes up] and catches him with someone else, just like her. She calls him "un pobre infeliz que va de veras sombras / Riéndose de todos riéndose de mí" [a poor unhappy person who truly goes in shadows / laughing at everyone, laughing at me]. The song is a declaration that she will now be the one laughing at him, especially when the other woman finds out the truth. The singer's final, blunt realization is, "Yo te veía diferente / Si fuiste solamente un payaso perdedor" [I saw you differently / When you were only a losing clown].