Line a 9 x 9 inch baking dish with plastic wrap. Mix jell-O powder and 2 1/2 cups boiling water in a large bowl and stir to dissolve. Add tequila, lime juice and triple sec and stir until well mixed. Pour mixture into prepared pan and refrigerate at least 3 hours or up to 24 hours. Once Jell-O has set completely, turn out onto a clean surface and peel off plastic wrap. Cut into 1 inch cubes and serve on cocktail picks. Cheers!
Tip: Lose the plastic cups. Cocktail picks make these jiggly cubes easier to eat. Serves a party!