(function(){

  var perky;

  perky = function(selector, context) {
    return new perky.trick.init(selector, context);
  };

  perky.trick = perky.prototype = {
    init: function(selector, context) {
      return this;
    },
    push: Array.prototype.push,
    splice: [].splice
  }

  perky.trick.init.prototype = perky.trick;

  window.perky = perky;

})(window);

$(function(){
  var x = perky();
  x.push('value');
  console.log(x);
  console.log(x.length);
  console.log(x[0]);
});