Heat large skillet over medium high heat and do not oil. Sear spot shrimp in shell for 1 minute on each side. Place spot shrimp in a heat safe bowl. Turn heat to low, add butter and garlic, and sauté for 30 seconds. Add tequila, hot sauce, and lime juice. Season liberally with salt and pepper. Bring to a boil for about 2-3 minutes. Remove sauce from heat and pour over spot shrimp. Serve hot with crusty bread for dipping. Kirk's pro cooking tip: This is a great appetizer, best served with lots of napkins, as your hands will get saucy. If you want the shells for stock, take them off before searing, and sear with oil.