The song "No Sabes Asustar" by La Hermanastra más Fea is about someone who is not able to scare the person they are trying to scare. The lyrics talk about hiding behind a cornice and trying to scare someone, but ultimately failing to do so. The chorus repeats the phrase "No sabes, no sabes" which translates to "You don't know, you don't know" in English, emphasizing the incompetence of the person in scaring others. The song also mentions the question "¿Dónde está tu dolor?" which translates to "Where is your pain?" This could be interpreted as asking where the person's vulnerability lies, as they are not able to effectively scare others. Overall, the song conveys a sense of frustration and ineffectiveness in trying to frighten someone, and highlights the inability of the person to evoke fear in others.