In a small bowl, MIX together the mayonnaise and taco seasoning.
In another small bowl, MIX the avocado with the lemon juice, salt and pepper
In a large baking dish, LAYER the ingredients starting with the bean dip, mayo-taco, avocado, sour cream, tomatoes, olives, onions.
TOP with the grated cheese and REFRIGERATE 2-3 hours.
Serve with Fritos or tortilla chips.
Per Serving (excluding unknown items): 242 Calories; 20g Fat (72.1% calories from fat); 5g Protein; 12g Carbohydrate; 3g Dietary Fiber; 17mg Cholesterol; 426mg Sodium. Exchanges: 1/2 Grain(Starch); 1/2 Lean Meat; 0 Vegetable; 0 Fruit; 0 Non-Fat Milk; 3 Fat; 0 Other Carbohydrates.