The shrimp can be marinated 3 hours before putting it on the grill. This is also a great marinade for chicken.
1 lb. shrimp, peeled
3 tbsp. olive oil
3 tbsp. fresh cilantro, chopped
2 tbsp.
fresh lime juice
2 cloves minced garlic
2 tsp. tequila
1/4 tsp. cayenne pepper
1/4 tsp. salt

Stir shrimp, olive oil, cilantro, lime juice, garlic, tequila, cayenne pepper, and salt together in a bowl. Cover the bowl with plastic wrap and refrigerate shrimp in marinade for at least 30 minutes. Preheat outdoor grill for high heat, and lightly oil the grate. Remove shrimp from bowl and thread onto skewers; discard marinade. Cook on the preheated grill until shrimp turn pink, 2 to 3 minutes per side.