Inaguantable translates to "unbearable" or "insufferable." It's a strong adjective that goes beyond simply saying someone is annoying; it implies a level of difficulty that is truly hard to endure.
In "Soy Lo Peor," the singer uses this word to describe himself, admitting, "Sé que soy inaguantable con tu amor que tanto amo" (I know I am unbearable with your love that I love so much). This self-deprecating honesty makes the word particularly impactful, highlighting the internal conflict of someone who recognizes their flaws but still deeply cherishes a relationship.
Cardenales de Nuevo León open with blunt self-assessment: "Entre lo peor, de lo peor, soy lo peor" [Among the worst, of the worst, I'm the worst]. The singer doesn't dress up his flaws — he owns being "Un individuo insoportable" [An unbearable individual], moody and hard to live with.
But the song turns on one request: "No hagas caso por favor" [Don't pay attention, please] to his crazy moods and bad behavior, because however hard he is to love, the devotion behind it is total — "Por cada hora de extrañarte como un necio" [For every hour of missing you like a fool], "Un beso tuyo para mí no tiene precio" [A kiss from you for me is priceless]. The closing line flips the whole premise: "Soy el mejor" [I'm the best] — worst as a person, best as a lover.