Gallero literally translates to "rooster fighter" or "cockfighter". It's a specific term related to the sport of cockfighting, which is culturally significant in some regions.
In the context of the song, the lyric "Traigo escuela del gallero" (I bring the school of the rooster fighter) suggests that the speaker is tough, experienced, and strategic, much like someone involved in this competitive and often dangerous activity. It implies a background of resilience and cunning.
Get ready for "El 13" by Los Dos Carnales! This song is a declaration of strength and a warning to anyone who might underestimate the singer. He's got "escuela del gallero" [school of the rooster fighter], meaning he's tough and knows how to handle himself in a fight, born and raised in Tijuana. He's not afraid of anything, and while he might not look impressive, his word is his bond: "no creen que está impreso bien pero vale mi palabra" [they don't think it's well-printed but my word is worth it]. He emphasizes the need to be smart in his line of work, not to brag about being brave, but he's definitely not someone to mess with, whether it's "por las buenas o por las malas" [by good ways or by bad ways].
He also talks about being cautious, because "las envidias nunca valgan" [envy is never worth it]. He mentions his sister and cousins watching over him from heaven, calling them his "ángeles de batalla" [battle angels]. He thanks his mentors and God for their advice and teachings, which have kept him on the right path. The song ends with a shout-out to Tijuana and its brave people, and a thanks to the "señor de los gallos" [lord of the roosters] for getting him into the fight. It's a powerful track about loyalty, resilience, and respect.