Help wanted. C++ question.

How do I declare a global object 'within' the class's brackets?

class Box{

public:
int x, y;
//Here's the problem.
Box A;//?

bool collision(Box A, Box B){}

}A, B;

Is it even possible to declare global objects within a class? Yes/no? Depending on your answer I may:
 
a) Drop out of college and become a plumber.
b) Kill myself.
c) Finish the app I'm currently working on.