Explicit passing "this" parameter to method call

Is it possible in c++ call class method with explicit passing first "this" param to it?

Something like this:

struct A
{
    void some() {} 
};

....

A a;
A::some(&a); // ~ a.some();

For reasonable question "WHY?": i need to implement std::bind analogue, and it works fine with constructions like this:

void f(int);
bind(f, 3);

but this doesn't work:

bind(&A::some, &a);

UPDATE: Guys, my question is obviously not really clear. I know how to use std::bind, i want to know HOW is it processing constructions where this param explicitly passed to it: std::bind(&A::some, &a);