In a pitcher, combine the lime juice, condensed milk, water, tequila, and orange juice.
Line up Dixie cups on a baking sheet, Fill each 90% of the way with tequila mixture.
Slice limes into ¼" thick rounds. Push a craft spoon or stick through the center of each lime round, so that half of the stick pokes out from each side.
Top mixture with the lime sticks.
Make sure the lime is resting directly on top of the mixture.
Freeze 6 hours, or overnight. When ready to remove, snip a small cut in the rim of each cup and peel.
Place into a dish with crushed ice to keep them from melting too quickly, Sprinkle tops with kosher salt, and sluuuurrrrpppp!