Self standing objects I was trying to create a simple glass and use physics on it. Well my problem is, that it can not fall on side and it is still going back standing on bottom. 

Does anybody know how to solve this? it looks like it has bottom heavy as block of concrete.
All you need to do is change the origin by pressing Ctrl+Alt+Shift+C > Origin to Center of Mass.

What is happening is the physical representation of the mesh is confused by the non-symmetrical mesh, it instead calculates it as if half of the mesh is below the origin, making it very bottom heavy.