The song "Why Can't You Behave?" by Ella Fitzgerald is about a person who is frustrated with their partner's inability to act properly and behave in a way that is expected of them. The singer is expressing their exasperation with the promises and assurances that were made by their partner, and the disappointment in their inability to follow through. The lyrics express a desire for the partner to change their ways and be more responsible and considerate. The singer even offers the idea of settling down on a farm and caring for the partner forever, but still wonders why they can't just behave and be good. The song conveys a sense of longing for a stable and loving relationship, but also a sense of exasperation and disappointment in the partner's inability to meet those expectations. The mention of a farm and settling down near the singer's old home town adds a nostalgic and romantic element to the song, conveying a desire for a simple and peaceful life with the partner. Overall, "Why Can't You Behave?" is a lament for a partner's inability to live up to their promises and behave in a way that is expected and desired by the singer.