Chiflado is a playful, informal way to say 'crazy', 'nuts', or 'kooky'. It's a more colorful and less common synonym for the word loco, which you'll also hear throughout the song.
In 'Un Poco Loco', the singer exclaims, "Chiflado tú me vuelves" (You drive me kooky!). This word perfectly captures the fun, slightly chaotic, and affectionate feeling of being driven mad by someone you care about, a central theme in this beloved song from the movie Coco.
From the animated film Coco, Mexican singer Luis Ángel Gómez Jaramillo teams up with Gael García Bernal for this playful, high-energy track about dealing with someone unpredictable. The singer teases a person who sees everything backwards: "Que el cielo no es azul... Que es rojo, dices tú" ("That the sky is not blue... That it's red, you say"). Instead of getting frustrated, the lyrics make fun of the confusion with insults that are silly rather than mean, like "Creo que piensas con los pies" ("I think you think with your feet"), which means you are acting totally backwards or without logic.
Everything in the track revolves around losing your mind in an amusing way. When the lyrics say "Tú me traes un poco loco" ("You make me a little crazy") and "Chiflado tú me vuelves" ("Nutty you make me"), the singer is laughing at how exhausting it is to guess what someone wants next: "Estoy adivinando qué quieres y pa' cuándo" ("I am guessing what you want and for when"). The song playfully stretches the Spanish diminutive suffix to absurd lengths with "Un poquititititititititititito loco" (an exceedingly tiny bit crazy) as Bernal cheers on the young singer with "¡Dale duro Miguelito!" ("Hit it hard, little Miguel!").