Descriprion: The gömböc is the first known physical example of a class of convex three-dimensional homogeneous bodies
called mono-monostatic, which, when resting on a flat surface have just one stable and one unstable point of equilibrium.
Source: https://upload.wikimedia.org/wikipedia/commons/thumb/5/51/Gomboc2.jpg/1200px-Gomboc2.jpg
Description: IYKYK
Source: https://www.getyarn.io/yarn-clip/24059f0c-1328-4ef1-b506-1d8460fef826/gif