Why can't static functions be virtual

[Xinok]

Simply put, static functions don't have a 'this' pointer, so it's impossible to make a static function a virtual function.
Objects with virtual functions have a 'hidden ID' which sets a unique value for each class type (AFAIK anyways...). If you don't have the 'this' pointer, you can't read the hidden ID in the object, so you don't know what type the object is, making it impossible to know which virtual function to call.