Cagarla is a very common, informal, and somewhat vulgar Spanish verb that means "to mess it up" or "to screw it up." While it literally comes from the word for "to poop," its common usage is much closer to the English phrase "to screw up."
In the song, the lyric "Mejor cagarla el doble que quedarse a la mitad" (Better to screw it up twice than to stay halfway) uses this word to convey a bold, no-regrets attitude. It encourages taking risks and going all in, even if it means making mistakes, rather than holding back. This makes it an interesting and memorable word for learners, as it's a very authentic expression of a common sentiment.
Reik and Lagos team up for "Vámonos A Mi Casa," a song that's all about taking a chance on love and throwing caution to the wind! It's about that intense feeling of wanting someone all to yourself, away from everyone else's opinions, just like when you were young. The lyrics, "Qué ganas me dan de tenerte tan solo conmigo, lejos de la gente" [How much I want to have you only with me, far from people], really set the scene for a romantic escape.
The song builds on the idea that it's better to try and maybe mess up than to live with regret. "No hay peor intento que el que no se hace" [There's no worse attempt than the one not made] and "Más vale arrepentirse que quedarse a la mitad" [It's better to regret than to stay halfway] are basically the song's motto. It's a bold invitation to just go for it, with the line "Vámonos a mi casa, luego vemos qué pasa" [Let's go to my house, then we'll see what happens] being super direct and exciting. They're ready to risk it all to see what could happen, even if it means making a mistake, because the thought of not knowing what it feels like to be in their lover's arms is just too much to bear.