"Ellas Soy Yo" (They Are Me) is Gloria Trevi getting angry on behalf of every woman society judges, and she does not soften it. The first verse lists double standards one after another: a woman who sleeps with someone she loves is called "una piruja" (a slut), while the man who slept with her is "un fregón" (Mexican slang for a stud, a guy everyone admires). She mocks the people who blame a girl "por su minifalda" (for her miniskirt), and the man who turns fifty and becomes "un señor tan interesante" (such an interesting gentleman) while women of thirty are treated as "en oferta" (on sale, like old stock).
The chorus flips to a question aimed at men: "¿Cómo fue que olvidaste / de su vientre y su sangre te alimentaste?" (How did you forget / you fed on her womb and her blood?). Every man was carried and protected by a woman, and still "tú la encadenas al dolor" (you chain her to pain). The second verse goes after "pinche sociedad" (damn society, pinche is a very Mexican swear word) that throws stones in the name of morality, and a world where a baby boy is the dream and a girl is "un caso penado" (something punished). Then the title line lands: "Y todas son ellas, y ellas soy yo" (And they are all her, and they are me). Trevi puts herself inside every one of those women. It is blunt and a little furious, and it works.