First, you'll want to cut up some watermelon and freeze it. You can start with room temperature watermleon but the color stays more even if you freeze it first. Puree the frozen watermelon along with the lime juice using a blender then spoon into the popsicle molds filling each 3/4 full.
Freeze for at least 30 minutes (or longer if you're starting with juice)
Remove from freezer and add a tbsp of Greek yogurt to each popsicle. You may need to press the yogurt into the mold to eliminate air pockets.
Freeze for another 30 minutes.
Finally, puree the kiwi in a blender and layer that on top of the frozen yogurt. Freeze for at least an hour.
To serve, run the popsicle container under warm water to loosen from mold. Enjoy!