SOURCE

Function.prototype.newcall = function() {
  // console.log(this, arguments)
  arguments[0].fn = this
  arguments[0].fn()
}
function greet() {
  var reply = [this.animal, 'typically sleep between', this.sleepDuration].join(' ');
  console.log(this, reply);
}

var obj = {
  animal: 'cats', sleepDuration: '12 and 16 hours'
};

//greet.call(obj);  // cats typically sleep between 12 and 16 hours
greet.newcall(obj)