[Decode]

Function.prototype.bbind = function(context) {
  var _this = this,
      args =  [].slice.call(arguments, 1);
  
  return function() {
    _this.apply( context, args.concat( [].slice.call(arguments) ) );
  };
};


var obj = {
  prop: 'Bla-bla'
};

function foo() {
  alert(this.prop);
}

var a = foo.bbind(obj);

a();