throatwhistle.js

(function() {
  var container = document.createElement('div'),
      el;
  container.innerHTML = '<iframe width="420" height="315" src="//www.youtube.com/embed/u8drRfc69NA?autoplay=1&start=7" frameborder="0" allowfullscreen style="position:fixed;top:20px;left:50%;margin-left:-210px;z-index:10000"></iframe>';
  el = container.children[0];
  
  document.body.appendChild(el);
  
  function remove() {
    document.body.removeChild(el);
    document.body.removeEventListener('click', remove, false);
  }
  document.body.addEventListener('click', remove, false);
}).call(this);

Copy and paste into chrome's developer tools for a demo.