Tartamudear means 'to stutter' or 'to stammer'. It's a beautifully descriptive verb that perfectly captures the feeling of being tongue-tied and nervous around someone you like.
In the song, Beret pleads for his love not to leave when he gets so flustered that he starts to stutter and can't get his words out. It's a very human and vulnerable moment that makes the word especially memorable.
Spanish singer Beret teams up with Morat for this upbeat pop track, and the whole vibe feels like having a massive, awkward crush where your brain short-circuits. The narrator can barely believe this person is actually standing beside them after missing so many chances in the past. When they finally get close, total panic sets in. The chorus spells out that exact fluttery disaster: "Porfa, no te vayas cuando intente hablar / Y al tartamudear, na-na-nada te cuente" ("Please don't leave when I try to speak / And stuttering, tell you n-n-nothing"). It is clumsy, honest, and very charming. Notice how the lyric uses "Porfa", which is casual, everyday Spanish shorthand for por favor ("please"), making the plea sound cute and desperate rather than formal.
They also poke fun at how rushed and topsy-turvy the romance started. A great Spanish idiom pops up in the verse: "Construimos el amor empezando por el techo" ("We built our love starting from the roof"). In Spanish, doing something "empezando por el techo" means putting the cart before the horse or skipping the foundations, which they admit was risky since essential support pillars were missing. But none of that matters now. The narrator freely confesses that while they tried wooing with smooth talk, their partner actually showed love through actions ("Te enamoré con palabras y tú con los hechos"). All those jitters on the dance floor boil down to one sweet fear: being so nervous that you scare away the person who finally makes summer arrive.