Why is the song ain't we got fun both appropriate and ironic in the great gatsby?

Well, honey, that song "Ain't We Got Fun" is like a big ol' slap in the face to all those fancy folks in "The Great Gatsby." It's appropriate because it captures the superficiality and materialism of the roaring '20s, but it's also ironic because, let's face it, ain't nobody having fun when all they do is chase after money and status. So yeah, it's like a bitter little reminder that maybe, just maybe, all that glitters ain't gold.