Heat the oil in a skillet. When hot add the squid and garlic and saute for 1 1/2 minutes only, stirring continuously, until the squid rings turn opaque. Add the tequila and cook for 30 seconds or until evaporated. Remove from heat and add black olives. Season to taste with salt and crushed red pepper. Set some dressed salad in a heated taco and fill with squid.
(To make cumin salad dressing, mix 1/4 teaspoon of ground cumin in your favorite dressing or in a mustard vinaigrette.) You can top this with the citrus salsa if you wish.