Ujule is an interjection, similar to "Whoa!" or "Wow!" in English, often used to express surprise, excitement, or emphasis.
It's a regional expression, particularly common in Mexican Spanish, and gives the song a very authentic, colloquial feel. The band uses it repeatedly throughout the lyrics to punctuate their declarations of love, defiance, and good times, making it a memorable and characteristic part of the song's charm.
This song feels like cruising through a small Mexican town at night with the windows down, a little danger in the air, and a lot of attitude. The singer talks about the cement sidewalks he knows “step by step” in “Hay banquetas de cemento, las conozco paso a paso” [There are cement sidewalks, I know them step by step], because that is where his new love lives: “Por aquí tengo un amor que hace días he conquistado” [Around here I have a love that I won over a few days ago]. He keeps coming back to her street even though people are threatening him: “Dicen que me han de matar” [They say they’re going to kill me]. The twist is his attitude. He answers with “No estoy mocho de las manos” [It’s not like my hands are cut off], basically saying, “I can defend myself.” It is tough, a little cocky, and kind of funny at the same time.
There is also a playful side in how he shows off for her. When he drives by in his old car, he says “Cuando paso en mi carrucha le subo todo al estéreo” [When I pass by in my beat‑up car, I turn the stereo all the way up] so she knows how much he loves her: “Para que sepa, chiquita, lo mucho que yo te quiero” [So you know, baby, how much I love you]. He jokes about her brothers being mad in “Y aunque se enojen mis cuñados” [Even if my brothers‑in‑law get angry], but he is not backing off. Lines like “Traigo con queso las papas” [I’ve got cheese for the fries] mean he feels he has what it takes, and “Además, no estoy dormido” [Besides, I’m not asleep] shows he is alert to any danger. Even when he says goodbye, it is temporary: “Ya me voy, no me despido, porque pronto voy y vengo” [I’m going now, I won’t say goodbye, because I’ll be back soon]. With the tambora music “following” them and mentions of going from place to place, it feels like a rolling party wrapped around a risky love story that he absolutely refuses to give up.