How to Make It
Process watermelon and lemonade concentrate in a blender on high speed until smooth, 15 to 20 seconds. Pour through a fine wire-mesh strainer into a pitcher, and discard any solids.
Pour mixture evenly into 10 (2-ounce) plastic ice pop molds, and freeze 1 hour. Insert pop sticks, and freeze until solid, about 3 more hours.