Topsy turvy cakes have become a favorite, whimsical design, defined by cake layers cut and stacked to appear as though the cake is leaning. Most look as though they will fall over, but if properly supported they are perfectly sturdy. The illusion is achieved by cutting the top cake layer on a slant. Then the center of that layer is hollowed out so the next layer will sit flat on top of it. This technique is repeated with each subsequent layer. Lopsided cakes can be achieved with round, square and other shaped pans.