The song "Mean Old World" by North Mississippi Allstars talks about the tough and unforgiving nature of the world, especially when it comes to love and relationships. The lyrics reflect the feeling of loneliness and heartbreak, expressing how difficult it can be to find genuine love and companionship in a world that can be harsh and unyielding. The song talks about feeling abandoned and betrayed, and the pain of realizing that the person you love doesn't feel the same way about you. The singer expresses a sense of resignation and acceptance of the harsh reality that they may have to find companionship elsewhere. The bluesy guitar solos in the song add to the emotional intensity and melancholy of the lyrics, underscoring the feeling of sadness and resignation. Overall, "Mean Old World" captures the feeling of heartache and the struggle to find love and connection in a world that can be cold and unforgiving.