Cachucha literally means "cap" or "hat". However, in the context of this song, it's used as a slang term to refer to a position of power or authority.
The lyric "Me pusieron la cachucha y ahora yo me encuentro al mando" translates to "They put the cap on me and now I'm in charge." This metaphorical use of cachucha makes it an interesting and unique word choice, hinting at the protagonist's rise to power within their neighborhood.
"Mi Vecindario" opens with a patrol car rolling through the block — "La patrulla pasa por mi vecindario" [The patrol drives through my neighborhood] — and stays planted on that same street for the rest of the song. Fuerza Regida's narrator has been handed the run of the neighborhood, "Me pusieron la cachucha y ahora yo me encuentro al mando" [They crowned me and now I'm in charge], and treats every rumor and gunshot as proof the position is his to keep.
The bravado that follows is built from specific, everyday images rather than vague toughness: he's traded an old truck for something better, "Pasamos de Sierra, a un doble RR del año" [We went from a Sierra to a new Rolls-Royce], and keeps a joint going through it all, "Buena yerba voy quemando" [I'm burning good weed]. The song closes on plain pride in where he's from — "Que viva mi raza, somos 100% Mexicanos" [Long live my people, we're 100% Mexican] — turning a song about one block into a statement about an entire community.