Toss the watermelon and lime juice into a high-powered blender. You want everything to be smooth and well combined. Optional - if you want to add a little kick, add 1-2 small slices of fresh jalapeno.

Pour your watermelon mixture into the ninja creami pint container up to the max fill line. Freeze container for 24 hours until frozen solid.

Remove frozen pint, run under hot water for 60 seconds and install into your ninja creami machine. 

For the first spin, use Sorbet setting. Remove the outer bowl lid. Add the tequila, triple sec and sugar and press respin button.

Check margarita. The final product should be creamy and have a smooth texture. If your desired consistency isn’t reached you can add 1 tbsp of water and spin again on the respin setting. 

Rim your glasses with a bit of lime juice and tajin. Pour the watermelon margarita into the glasses. Add a slice of jalapeño and lime wedge to the margarita.

Serve immediately, and enjoy the refreshing, boozy goodness!