What does this sentence mean in the song Sweet Virginia by the Stones Yes you have got the desert in your toenail?

In "Sweet Virginia" by The Rolling Stones, the line "Yes you have got the desert in your toenail" suggests a sense of weariness and hardship. It metaphorically conveys the idea of carrying burdens or experiencing rough conditions, even in seemingly small aspects of life. The imagery evokes feelings of discomfort and the struggles that come with a challenging journey. Overall, it reflects the themes of resilience and the toll of life's experiences.