"Lecciones De Urbanidad" is a song by Spanish singer-songwriter Joan Manuel Serrat. The lyrics of the song talk about the importance of cultivating good manners and appearances while hiding one's negative qualities or actions. The song satirically criticizes hypocrisy and how society often values appearances over true moral values. The lyrics suggest that one should cover their baser instincts and present a harmless exterior to the world, even if they engage in immoral behavior. They emphasize the significance of maintaining a polite and courteous demeanor in public, while also highlighting the need to deceive and manipulate others without raising suspicion. The song sarcastically advises the listener to smile when facing difficulties or criticism, to deliver bad news disguised as gifts, and to announce their destructive plans with eloquence. It depicts a world where individuals are judged based on surface-level appearances and where one can get away with negative actions as long as they maintain a facade of good manners. Through this biting social critique, Serrat highlights the hypocrisy and superficiality of society, encouraging listeners to reflect on the contrast between people's public personas and their true character.