Argüende is a colloquial and somewhat playful term that means a commotion, a ruckus, or a big fuss, often involving gossip or a dramatic situation. It's not a word you hear in every Spanish song, making it quite unique and memorable.
In "67," the lyrics use it twice: "Se armó el argüende" (The commotion started) and "Qué perro, se armó el argüende" (How cool, the ruckus started). This suggests a situation where things are getting lively, perhaps a party or an exciting event, adding to the song's energetic and rebellious vibe.
The whole song is built to land one line: "Quiere besitos, pero está six-seven" [She wants kisses, but she's six-seven]. It arrives three times and never once explains itself, which is the joke. Everything around it is Fuerza Regida describing a security detail the way other people describe jewellery.
"Me escoltan porque dicen que me quieren matar" [They ride escort for me because they say they want me dead] is the line that makes sense of the armored trucks and of "Caravana, pura placa que parezco presidente" [A convoy, nothing but badges, I look like a president]. Two lines earlier he is reassuring somebody's mother: "Dile a tu mamita, yo te cuido, no hay pendiente" [Tell your mom I'll look after you, no need to worry]. He moves between a TEC-9 in his waistband and besitos without changing tone once, and that flatness is what makes it funny.