Clavo literally translates to "nail", as in the kind you hit with a hammer. This simple word is the key to the song's clever title and a very common proverb in Spanish.
The song is built around the saying "Un clavo saca a otro clavo" (One nail pulls out another nail). This is the Spanish equivalent of the English idea that "the best way to get over an old flame is to find a new one." In the song, the singer offers to be the new "clavo" to help a woman forget her ex-boyfriend, making this a memorable and culturally rich word to learn.
Prince Royce and Maluma are teaming up here as the ultimate rebound plan. The whole track revolves around an old Spanish proverb: un clavo saca otro clavo (one nail drives out another nail), which basically means the best cure for a broken heart is a brand-new lover. Royce watches someone cycle through the same toxic cycle five times with a guy who only calls her drunk at 4:20 AM. His advice? The minute he dumps you, walk away and replace him immediately. He sings, "Que yo soy el clavo que saca ese clavo, y dile que se joda" ("I am the nail that pulls out that nail, and tell him to get screwed"). It is cocky, funny, and completely direct.
Maluma jumps in with pure swagger and zero filter. He calls out the ex as an idiot who mistreats an incredible woman, then dials the flirtation up to ten. He offers to trade his Grammy awards for her attention ("por ese culo yo te entrego hasta mis Grammys" [for that ass I'd even hand over my Grammys]) and makes a cheeky, absurd joke about handing out his salami without even being Italian. The song mixes real frustration over watching a friend settle for less with shameless party-boy energy, making it a great look at real street slang for walking away from bad romance.