y.js

function fix(f) {
  return function(x) {
    return f(x)(fix(f));
  }
}

var fac = function(x) {
  if(x == 1) {
    return function(_) {
      return 1;
    }
  } else {
    return function(r) {
      return x * r(x - 1);
    }
  }
}

console.log("The factorial of 5 is " + fix(fac)(5));

var torture = function(_) {
  return function(r) {
    console.log("I'm JavaScript and I'm a steaming pile of dog shit");
    r(undefined);
  }
}

fix(torture)(undefined);