In a shaker full of ice, combine 2oz tequila, 1oz Triple Sec, 1oz fresh squeezed lime juice (approx. 1 normal sized lime), 1oz fresh squeezed lemon juice (approx. 3/4 1 normal sized lemon), and 1oz simple syrup. Shake until ice cold.
Serve over rocks in a margarita glass with or without salt.