Chulería is a fantastic Spanish slang word that means a kind of effortless cool, swagger, or charming cockiness. It's the special flair that makes someone stand out.
In the song, the main character Diego is described as having "chulería y ese punto de alegría" (swagger and that touch of joy). This single word perfectly captures his magnetic personality as he confidently walks into the club, ready to take over the dance floor.
This song is all about a guy named Diego, a local legend who is the life of the party. The lyrics describe him as a cool, happy-go-lucky character with a unique "Rastafari afrogitano" [Rastafari Afro-gypsy] style. He shows up at the club dressed in his "traje agua marina" [aquamarine suit] and is ready to dance, even when there's no room on the floor.
The best part is what happens when the DJ, who knows him well, plays his favorite song. Diego gets so into it that he sings along, but he doesn't actually know the words! The famous chorus, "Aserejé, de je, de jebe tu de jebere," is just Diego's fun, made-up version of the lyrics. He just dances, enjoys it, and sings his heart out anyway, which is what the song is all about.