Malote is a playful, colloquial term for a "bad boy" or "tough guy." It's formed by taking the word malo (bad) and adding the augmentative suffix -ote to make it bigger or more intense.
In "Nocturno," the singer embraces this persona, quoting a girl who calls him a malote. It's a perfect example of modern, informal slang that captures the song's confident and rebellious attitude.
In "Nocturno", Fuerza Regida leans straight into late-night chaos and bad behavior. The narrator announces that after midnight, he turns into the bad guy: "De noche soy el malo después de las doce" [At night I am the bad guy after twelve]. He flaunts his style, noting how his watch catches attention with "Qué bonito brilla el Rolex" [How pretty the Rolex shines], while lighting up blunts ("prendiendo los blones") and living recklessly. It is a full-throttle corrido tumbado about fast living, flashy wealth, and intense hookups.
The song gets hilariously blunt when dealing with romance and fidelity. He offers trips out to Florida with "Si quieres, te llevo a Miami conmigo" [If you want, I'll take you to Miami with me], but he cannot seem to stay out of trouble. When his partner starts an argument, he uses heavy Mexican slang to ask why she is giving him such a hard time: "No sé por qué me la haces tanto de pedo" [I don't know why you give me so much grief / start drama with me]. Then comes the utterly shameless excuse: he admits that while he cares about her, he still hooks up with other women on the side ("me chingo otros cueros" [I mess around with other girls]) and genuinely does not know what is going on with himself ("tampoco sé qué pedo" [nor do I know what's up]). He wraps it up by confessing his exact type: pretty girls and arrogant blondes ("las güeras bien mamoncitas").