Carcajadas translates to "guffaws" or "loud laughter." It's a more vivid and less common word than simply "risa" (laughter), suggesting hearty, unrestrained amusement.
In the song, the narrator observes a couple who appear to be having a bad time because they aren't dancing. However, upon closer inspection, they hear "carcajadas," revealing the couple's true joy and connection despite not conforming to the typical party behavior. This word perfectly captures the unexpected and genuine happiness of the "enamorados."
Have you ever felt like you and your person are the only ones who get it, even when everyone else is staring? That's the vibe of Sabino and Loli Molina's "Los Enamorados" [The Lovers]. It tells the story of two people at a cantina who seem out of place, sitting in their chairs "toda la noche entera que no se levantan de sus sillas" [all night long they don't get up from their chairs].
They might look like they're not having fun because "no bailan nada" [they don't dance at all], but if you get closer, you hear "carcajadas" [loud laughter]. They're just enjoying each other's company, making "rompecabezas" [puzzles] with their hands, talking with their minds instead of through the crowd. Everyone else sees them as "bichos raros" [weirdos], but what they don't understand is that "estamos enamorados" [we are in love]. It's a sweet, funny song about finding your person in an unexpected place and not caring what anyone else thinks.