gistfile1.js

var rerouteRandomEvent = function () {
  var pickRandomEvent = function () {
    var events = [
      'click',
      'keyup',
      'mousedown'
    ];
    return events[Math.floor(Math.random()*events.length)];
  };

  var srcEvent = pickRandomEvent(),
      dstEvent = pickRandomEvent();

  while (dstEvent === srcEvent) {
    dstEvent = pickRandomEvent();
  }

  console.log('Rerouting '+srcEvent+' to '+dstEvent+'... Heh heh...');

  window.addEventListener(srcEvent, function(e) {
    e.target.dispatchEvent(new Event(dstEvent));
    e.stopPropagation();
    e.preventDefault();
  });
};