Combine the watermelon, vodka, rum, watermelon liqueur, agave and lime wedges in a cocktail shaker and muddle. Fill with ice and shake. Pour into a pint glass or a small watermelon and garnish with an umbrella if desired.
NotesThis recipe was provided by a chef, restaurant or culinary professional and may have been scaled down from a bulk recipe. The Food Network Kitchens chefs have not tested this recipe, in the proportions indicated, and therefore, we cannot make any representation as to the results.