Place watermelon chunks, honey and lime juice in a blender and blend for 30 seconds on medium-high or until completely blended. 

Pour watermelon mixture into a 9×9 or 9×13 baking dish. Place in freezer for 1 hour. Take the baking dish out of the freezer and using a fork, scrape the frozen areas of the slush until broken apart. Continue scraping the slush with a fork every couple hours. The watermelon mixture needs to be frozen for a total 4-6 hours before serving.

Before serving, scrape the frozen mixture again with a fork, spoon into bowls and enjoy.