"Sand in My Boots" is a country song by Morgan Wallen that reflects on the bittersweet memories of a summer romance. The lyrics describe the feelings of nostalgia and longing as the narrator recalls moments spent with a loved one at the beach, emphasizing the carefree nature of their time together. The song captures the essence of youthful love and the impact of fleeting experiences. It highlights how certain places, like the beach, can evoke strong emotions and memories, leaving a lasting impression, much like the sand that remains in one's boots long after leaving.