Piquete is a fantastic Puerto Rican slang word that's tricky to translate directly, but it generally means 'swag', 'style', or a confident, sometimes cocky, attitude.
In the song, Daddy Yankee asserts his dominance by saying he's a "fuerza de choque que tumba todos los piquetes" (a shock force that knocks down all the swag/attitude). Learning this word is a key to understanding the cool, confident language you'll often hear in reggaeton music.
Ever had a breakup so messy that you swear you will act like strangers if you bump into each other on the street? That is the exact vibe Puerto Rican reggaeton heavyweight Daddy Yankee and Sech bring here. They are laying down strict rules of total separation: "Si por ahí nos vemos, ni nos saludemos" ("If we run into each other out there, let's not even say hi") and "Si me escribes, queda en visto" ("If you text me, it gets left on read"). Leaving someone en visto is that modern sting of seeing the blue checkmarks and getting zero reply. There is zero room to patch things up: Yankee jokes that their bond is so shattered, "no se pega ni con tape" ("it won't stick together, not even with tape").
Still, pride makes people say the funniest things during a split. Daddy Yankee refuses to let his ex have the upper hand, snapping, "Tú no me dejaste, no te des los méritos / Dale pa'l banco, si estás buscando crédito" ("You didn't dump me, don't take the credit / Head to the bank if you're looking for credit"). It is a witty, sarcastic pun turning emotional "credit" into literal bank credit. Yet right in the middle of claiming he wants nothing to do with her, they keep slipping in that classic, messy catch: "Solo una vez más esto se va a dar / Pa' que lo olvidemos" ("This is only going down one more time / So we can forget each other"). It is blunt, petty, and painfully familiar for anyone who has ever tried to negotiate that ill-advised "one final goodbye."