1 basic yellow cake mix
1 (16 oz.) sour cream
1/2 c. sugar
1 1/2 c. coconut
1 lg. whipped topping

Bake cake according to directions on mix in as thin layers as desired. Cool. Mix sour cream, sugar, and 1 cup coconut together and divide into 2 equal parts. Use 1/2 of this mixture as filling between layers. Add 1/2 cup coconut and whipped topping to the other half of the mixture and use as icing on top and sides of cake.