Preheat oven according to directions on box of cake mix. Spray two 8-inch round pans with non-stick cooking spray. Mix cake mix, one box pudding, eggs, oil, water, 1/2 cup milk. Pour equally into pans and bake according to time on cake box.
In separate bowl, mix remaining milk and other box of pudding. Once mixed well, add can of icing and mix together. Icing should have a pudding consistency.
Once cakes are done, cool. Once cool, put first layer on cake plate and add thick layer of icing mixture. Top with chocolate chips. Put second cake layer on top of first and pour remaining icing mixture on top. Let the icing run over the sides of the cake. Cool for at least two hours before serving.