Preheat oven to 350 degrees
2.In a large bowl, mix together the cake and pudding mixes, sour cream, oil,mayo, beaten eggs and beer. Stir in the chocolate chips and pour batter into 2 well greased 8 inch cake pans.
3.Bake for 30-40 minutes, or until top is springy to the touch and a wooden toothpick inserted comes out clean. Cool cake thoroughly in pan at least an hour and a half before inverting onto a plate .Frost/Enjoy