gistfile1.js

function b (fn) {
  var str = fn.toString();
  var buf = "";
  var ch = 0;
  var len = str.length;
  var i = 0;
  var inBody = false;

  while (len--) {
    ch = str[i++];

    if ('{' == ch) {
      inBody = true;
      continue;
    }

    if (inBody) {
      if (len > 0) {
        buf += ch;
        continue;
      } else {
        break;
      }
    }
  }

  return buf;
}

function x () {
  $(window).find('.foo').children('.bar').trigger('click');
  console.log('I clicked some shit !');
}

console.log(b(x));