To make the sauce: In a pan, combine butter, black pepper, Cajun seasoning, and garlic over medium heat, cook for 5 minutes. Stir in chicken bouillon cube, clam juice, Worcestershire sauce and sugar. Bring to a boil.
In the meantime, mix together Worcestershire, black pepper, Cajun seasoning, garlic and shrimp.
Add shrimp mixture to sauce, and cook for approximately 2 minutes or until shrimp is pink and cooked through. Serve with bread and lemon.