How do I make my object an event emitter/receiver?

gistfile1.txt

function Thing() {
  var self = this;
  // Thing is now an event emitter/receiver
  require('events').EventEmitter.call(self);
}

var thing = new Thing();

thing.emit('foo');

// Expected result: no error
// Actual result: thing.emit('foo');
//      ^
// TypeError: Object #<Thing> has no method 'emit'