Tatequieto is a colloquial and somewhat aggressive way of saying "stay still" or "calm down," often used to assert dominance or control over a situation or person.
In the context of this song, it's used repeatedly in the phrase "ese culo es mío tatequieto," which translates to "that ass is mine, stay still." This phrase is a possessive and forceful declaration, indicating that the singer is claiming ownership and demanding that others back off. It's an interesting word because it's not standard Spanish and carries a strong, assertive tone that is central to the song's theme.
This song, "Tate Quieto" by Luigi 21 Plus featuring Tainy, is a super direct and possessive declaration of love (or maybe just intense desire!). The singer is basically saying, "That butt is mine!" repeatedly, making it clear he doesn't want anyone else looking. He even says, "ese culo es mío ese culo es mío ese culo es mío tatequieto para mí o no la miren que estoy bien aborrecido" [that butt is mine, that butt is mine, that butt is mine, stay still for me or don't look, because I'm very annoyed].
He describes her as someone who knows she's beautiful and doesn't need compliments, comparing himself to "profesor Jirafales" and her to "doña Florinda" from a famous Mexican sitcom, but with a much more explicit twist! He knows she's a bit of a "canalla" [scoundrel] and might lie, but he's so obsessed he'd "subo y bajo el himalaya" [climb up and down the Himalayas] for her. It's a fun, over-the-top expression of infatuation, even if it's a bit much at times!