In a medium bowl mix the sour cream, mayo, and half of the taco seasoning together, then set aside.
In another medium bowl mash the avocados together with the lime juice, salt, and pepper, then set aside.
In a microwave safe bowl heat up the refried beans for a few seconds so that it's pliable and mix in the other half of the taco seasoning.
In a pie plate assemble the layers in this order: 1-Refried Beans, 2-Avocado Mixture, 3-Seasoned Sour Cream and Mayo Mixture, 4-Cheddar Cheese, 5-Tomatoes, 6-Black Olives, 7-Green Onions.
Spread the first 3 layers evenly over the next.
Refrigerate before serving for at least 3 hours and serve chilled with Fritos.
Recipe by Recipe For Flavor at http://recipeforflavor.com/?p=578