Ondeadísimos is a highly expressive Mexican slang word derived from onda (wave or vibe), featuring the superlative suffix -ísimo which means "extremely" or "the absolute most."
In the song, Xavi sings "Los tiene ondeadísimos" to describe how this stunning girl has everyone completely crazy, infatuated, and mind-blown just by looking at her. It is a fantastic slang word to learn if you want to understand modern regional Mexican music and sound incredibly authentic!
This song is the ultimate social media revenge anthem! Xavi tells the story of a girl whose ex was a player, or as the song puts it, wanted to be a "puto" (player/man-whore). Now, it's her turn to make him sorry.
Her weapon of choice? A killer look. She gets dressed up in designer brands like Cartier and Celine for her "OOTD" (Outfit of the Day) and posts a photo on Instagram right before bed, just so he'll see it. With her red lips and confident attitude, she looks so good that "a nadie pela" (she doesn't pay attention to anyone). The whole point is to show him, "Mira lo que perdiste" (Look what you lost). She has him and everyone else "ondeadísimos" (totally dazed or shook) by how great she's doing without him.