Carambola literally refers to a 'carom' in billiards, where the cue ball hits two other balls. Figuratively, it means a 'fluke' or a 'lucky shot' – an unexpected and fortunate turn of events.
In the song, Dani Martin uses it to describe the serendipitous feeling of running into someone on the streets of Madrid. It's a charming and slightly whimsical word that captures the joy of an unplanned, happy encounter, making it memorable and unique.
"Ahora" runs its own title in reverse. Dani Martín spends the first half listing everything that used to excite him: her getting silly, her short skirt, the way she’d ignore her friends’ calls to stay in with him. Then the song flips — "Ya no me emociona, que aquí queden comas" ("It no longer excites me, that there are still commas here") — and repeats the same list only to say none of it moves him anymore. He wants a hard stop, not a pause: "Quiero el punto que me aleje ya de ti" ("I want the period that already distances me from you"). The punctuation carries the whole argument — commas keep a relationship open, a period ends it.