Enajenado is a strong and evocative word that means 'alienated' or 'deranged'. It's not a word you hear every day, making it particularly interesting and memorable.
In "Lo Tuyo Es Mental," Celia Cruz uses it to describe someone who is completely out of touch with reality, living in a fantasy world of their own making. She sings, "Enajenado mental, qué pena me das" (Mentally deranged, what a shame you are to me), highlighting the severity of the person's delusion and the pity she feels for them. This word perfectly captures the song's theme of mental detachment and delusion.
Celia Cruz spends three minutes telling an ex that his problem is not her, it is his own head. The hook lands the diagnosis over and over: “Qué pena me da tu caso” (“your case makes me feel so sorry”), answered by “Lo tuyo es mental” (“yours is mental”). She never sounds heartbroken. She sounds embarrassed for him.
The verses build the case against him. He told the papers all about his romantic conquests, “Publicabas en la prensa / Conquistas de amor”, and nobody is buying it any more: “No tienes sabor” (“you’ve got no style”). He plays the millionaire everywhere he goes, “Te las das de millonario / Doquiera que vas”, and then “Cuando hay que pagar las cuentas / No lo haces jamás” (“when there are bills to pay, you never do it”). By the last verse she has stopped arguing and started prescribing: “Vete a ver con un psiquiatra” (“go and see a psychiatrist”). Johnny Pacheco’s band keeps the whole takedown dancing, which is what makes it funny instead of cruel.