Pegação is a Brazilian Portuguese slang term that refers to a period of casual dating, hooking up, or having multiple casual encounters without any serious commitment.
In the song, the lyrics describe a relationship that started as "pegação" but unexpectedly evolved into something deeper: "E o que era para ser só pegação foi virando sentimento" (And what was supposed to be just hooking up turned into feelings). This word is interesting because it captures a common modern dating dynamic and is quite specific to Brazilian Portuguese informal language.
Have you ever had a casual hookup unexpectedly turn into real love? That's the heart of this song by Brazilian stars Claudia Leitte and Mari Fernandez. The singers describe a situation where what was supposed to be just a casual fling ("só pegação") slowly became a deep feeling. Now, the heart "hasn't gotten over" a kiss that was just too good to forget. They sing that trying to forget this love is a hopeless task, like "throwing water upwards" and expecting it not to fall back down.
The central idea of the song is captured in a beautiful metaphor: "You changed my weather forecast." Before this person came along, the emotional outlook might have been clear and simple. But after their kiss, a sudden "rain of love" began to fall, soaking the singers in powerful, unexpected emotions. It's a sweet song about being caught off guard by love and completely swept away by the storm of feelings that follows.