Vergüenza translates to "shame" or "embarrassment." It's a common emotion, but its use in this song is particularly interesting and inviting.
Antonio Orozco sings, "Pídeme y no tengas vergüenza en hacerlo" (Ask me and don't be ashamed to do it). He's encouraging the listener to ask for anything without hesitation or embarrassment, emphasizing his generosity and willingness to give. This makes the word feel warm and open, inviting the listener to connect with the song's message of unconditional giving.
"Pídeme" turns a love song into a sales pitch. Antonio Orozco frames devotion as a market stall, running a permanent clearance sale on his own heart: "Pídeme, que tengo de oferta lo eterno" [Ask me, I have eternity on offer], "Abrazos al 30% y olvidos a cuarto y mitad" [Hugs at 30% off, and forgetting you at a quarter of the price]. It's a strange, funny way to say "I'll give you anything," dressing up total surrender in the language of a Black Friday flyer.
The joke has a real edge underneath it. He admits straight out, "No es nada que puedas comprar" [It's nothing you can buy], so the whole discount routine is really a trick to get you to ask for what you already want, since left alone you never would. By the time the chorus collapses into "Pídeme, pídeme, pídeme, pídeme" [Ask me, ask me, ask me, ask me], the joke has turned into a plea, and Orozco lets that happen without ever raising his voice.