Pour the chilled Sprite into a shallow, freezer-safe container, spreading it out evenly.
Place the container in the freezer and let it freeze for about 2 hours, until the liquid turns into a firm, icy slab.
Remove the frozen Sprite from the freezer and use a large spoon or fork to scrape and break into small icy crystals.
Continue scraping and mixing the icy flakes to break them down further, creating a granular, slush-like mixture.
Once the mixture is evenly slushy and bubbly, scoop it into glasses and serve immediately with a straw or spoon.
Enjoy the frosty, sparkling treat that captures the zest of childhood summers!