Intergaláctico means "intergalactic", referring to something beyond or between galaxies. In the song, the artist compares himself to a lost ant in intergalactic space, creating a striking image of feeling tiny, isolated, and completely overwhelmed.
Beny Jr raps about how one hard life shaped the man he is now, and asks to be understood rather than judged. He opens with shout-outs to friends who are locked up ("Free Lfar", "Free el Cata"), then explains himself: "Lo siento si me muevo así, es por las cosas que yo he pasado" (I'm sorry if I move like this, it's because of the things I've been through). Faith and doubt sit side by side, as when he asks "¿Dios me contestará a mí o será que ya me tiene abandonado?" (Will God answer me or has he already abandoned me?), and his mother is the one he asks not to judge him.
The rest is street pride and loyalty. He went from poor to touching wealth, "Antes era pobre, ser rico, lo rocé" (I used to be poor, I brushed against being rich), he trusts his crew over feelings ("No quiero sentimientos, quiero dinero", I don't want feelings, I want money), and he brushes off people who smile to his face and hate him in private. Late-night car rides, a night in a cell and the voices in his head give the song its weight. It closes on a sense of being small and adrift: "Me siento como una hormiga perdida en el espacio intergaláctico" (I feel like an ant lost in intergalactic space).