This tropical twist on the classic margarita combines tequila and rum for a delightful and exotic cocktail. 

Ingredients:
- 1 1/2 oz tequila 
- 1 oz dark rum 
- 1 oz lime juice 
- 1/2 oz orange liqueur 
- 1/2 oz orgeat syrup 
- Ice 
- Pineapple wedge and mint sprig for garnish 

Instructions:
1. In a shaker filled with ice, combine the tequila, rum, lime juice, orange liqueur, and orgeat syrup.
2. Shake well until chilled.
3. Strain the mixture into a rocks glass filled with ice.
4. Garnish with a pineapple wedge and mint sprig.
5. Enjoy the Tiki Margarita and imagine yourself on a tropical island getaway.