diff --git a/lib/array.js b/lib/array.js
index 315f6489d..54160af70 100644
--- a/lib/array.js
+++ b/lib/array.js
@@ -398,7 +398,7 @@
     array[AlphanumericSortEquivalents] = equivalents;
   }
 
-  extend(array, false, false, {
+  extend(array, false, true, {
 
     /***
      *
@@ -468,7 +468,11 @@
       checkCallback(f);
       index = arrayFind(this, f, 0, false, true, context);
       return isUndefined(index) ? -1 : index;
-    },
+    }
+
+  });
+
+  extend(array, true, true, {
 
     /***
      * @method findAll(<f>, [index] = 0, [loop] = false)
@@ -1158,8 +1162,10 @@
 
   });
 
+
   // Aliases
-  extend(array, true, false, {
+
+  extend(array, true, true, {
 
     /***
      * @method all()
@@ -1228,7 +1234,7 @@
    ***/
 
   function buildEnumerableMethods(names, mapping) {
-    extendSimilar(object, false, false, names, function(methods, name) {
+    extendSimilar(object, false, true, names, function(methods, name) {
       methods[name] = function(obj, arg1, arg2) {
         var result, coerced = keysWithObjectCoercion(obj), matcher;
         if(!mapping) {
@@ -1256,11 +1262,11 @@
     buildObjectInstanceMethods(names, Hash);
   }
 
-  function exportSortAlgorithms() {
+  function exportSortAlgorithm() {
     array[AlphanumericSort] = collateStrings;
   }
 
-  extend(object, false, false, {
+  extend(object, false, true, {
 
     'map': function(obj, map) {
       var result = {}, key, value;
@@ -1311,5 +1317,5 @@
   buildEnumerableMethods(EnumerableFindingMethods);
   buildEnumerableMethods(EnumerableMappingMethods, true);
   buildObjectInstanceMethods(EnumerableOtherMethods, Hash);
-  exportSortAlgorithms();
+  exportSortAlgorithm();
 
diff --git a/lib/core.js b/lib/core.js
index af993ca43..a087717a1 100644
--- a/lib/core.js
+++ b/lib/core.js
@@ -99,7 +99,7 @@
   function initializeClass(klass) {
     if(klass['SugarMethods']) return;
     defineProperty(klass, 'SugarMethods', {});
-    extend(klass, false, false, {
+    extend(klass, false, true, {
       'extend': function(methods, override, instance) {
         extend(klass, instance !== false, override, methods);
       },
diff --git a/lib/date.js b/lib/date.js
index 868892b8c..beb6715b8 100644
--- a/lib/date.js
+++ b/lib/date.js
@@ -1387,7 +1387,7 @@
    ***/
 
   function buildDateMethods() {
-    extendSimilar(date, true, false, DateUnits, function(methods, u, i) {
+    extendSimilar(date, true, true, DateUnits, function(methods, u, i) {
       var name = u.name, caps = simpleCapitalize(name), multiplier = u.multiplier(), since, until;
       u.addMethod = 'add' + caps + 's';
       // "since/until now" only count "past" an integer, i.e. "2 days ago" is
@@ -1527,7 +1527,7 @@
   }
 
   function buildFormatShortcuts() {
-    extendSimilar(date, true, false, 'short,long,full', function(methods, name) {
+    extendSimilar(date, true, true, 'short,long,full', function(methods, name) {
       methods[name] = function(localeCode) {
         return formatDate(this, name, false, localeCode);
       }
@@ -1599,7 +1599,7 @@
     var special  = 'today,yesterday,tomorrow,weekday,weekend,future,past'.split(',');
     var weekdays = English['weekdays'].slice(0,7);
     var months   = English['months'].slice(0,12);
-    extendSimilar(date, true, false, special.concat(weekdays).concat(months), function(methods, name) {
+    extendSimilar(date, true, true, special.concat(weekdays).concat(months), function(methods, name) {
       methods['is'+ simpleCapitalize(name)] = function(utc) {
        return this.is(name, 0, utc);
       };
@@ -1627,16 +1627,16 @@
   }
 
   function setDateProperties() {
-    date.extend({
+    extend(date, false , true, {
       'RFC1123': '{Dow}, {dd} {Mon} {yyyy} {HH}:{mm}:{ss} {tz}',
       'RFC1036': '{Weekday}, {dd}-{Mon}-{yy} {HH}:{mm}:{ss} {tz}',
       'ISO8601_DATE': '{yyyy}-{MM}-{dd}',
       'ISO8601_DATETIME': '{yyyy}-{MM}-{dd}T{HH}:{mm}:{ss}.{fff}{isotz}'
-    }, false, false);
+    });
   }
 
 
-  date.extend({
+  extend(date, false, true, {
 
      /***
      * @method Date.create(<d>, [locale] = currentLocale)
@@ -1751,9 +1751,9 @@
       addDateInputFormat(getLocalization(localeCode), format, match);
     }
 
-  }, false, false);
+  });
 
-  date.extend({
+  extend(date, true, true, {
 
      /***
      * @method set(<set>, [reset] = false)
@@ -2162,7 +2162,7 @@
 
 
   // Instance aliases
-  date.extend({
+  extend(date, true, true, {
 
      /***
      * @method iso()
@@ -2363,7 +2363,7 @@
     number.extend(methods);
   }
 
-  number.extend({
+  extend(number, true, true, {
 
      /***
      * @method duration([locale] = currentLocale)
diff --git a/lib/function.js b/lib/function.js
index b38be8867..aaee21458 100644
--- a/lib/function.js
+++ b/lib/function.js
@@ -24,7 +24,7 @@
     }, ms));
   }
 
-  extend(Function, true, false, {
+  extend(Function, true, true, {
 
      /***
      * @method lazy([ms] = 1, [immediate] = false, [limit] = Infinity)
diff --git a/lib/inflections.js b/lib/inflections.js
index 233a28bf4..b60675cfe 100644
--- a/lib/inflections.js
+++ b/lib/inflections.js
@@ -298,7 +298,7 @@
   Inflector.uncountable('equipment,information,rice,money,species,series,fish,sheep,jeans'.split(','));
 
 
-  extend(string, true, false, {
+  extend(string, true, true, {
 
     /***
      * @method pluralize()
diff --git a/lib/language.js b/lib/language.js
index 89fa34643..26b10db3c 100644
--- a/lib/language.js
+++ b/lib/language.js
@@ -278,7 +278,7 @@
     'vy': 'ꝡ'
   };
 
-  extend(string, true, false, {
+  extend(string, true, true, {
     /***
      * @method normalize()
      * @returns String
diff --git a/lib/number.js b/lib/number.js
index 7ae62e5ce..6a016c74d 100644
--- a/lib/number.js
+++ b/lib/number.js
@@ -30,7 +30,7 @@
   }
 
 
-  extend(number, false, false, {
+  extend(number, false, true, {
 
     /***
      * @method Number.random([n1], [n2])
@@ -54,7 +54,7 @@
 
   });
 
-  extend(number, true, false, {
+  extend(number, true, true, {
 
     /***
      * @method log(<base> = Math.E)
@@ -383,12 +383,12 @@
         return precision ? withPrecision(this, precision, fn) : fn(this);
       }
     }
-    extend(number, true, false, {
+    extend(number, true, true, {
       'ceil':   createRoundingFunction(ceil),
       'round':  createRoundingFunction(round),
       'floor':  createRoundingFunction(floor)
     });
-    extendSimilar(number, true, false, 'abs,pow,sin,asin,cos,acos,tan,atan,exp,pow,sqrt', function(methods, name) {
+    extendSimilar(number, true, true, 'abs,pow,sin,asin,cos,acos,tan,atan,exp,pow,sqrt', function(methods, name) {
       methods[name] = function(a, b) {
         return math[name](this, a, b);
       }
diff --git a/lib/object.js b/lib/object.js
index c8b14375b..e0d4b0bb2 100644
--- a/lib/object.js
+++ b/lib/object.js
@@ -118,7 +118,7 @@
    *
    ***/
   function buildTypeMethods() {
-    extendSimilar(object, false, false, ClassNames, function(methods, name) {
+    extendSimilar(object, false, true, ClassNames, function(methods, name) {
       var method = 'is' + name;
       ObjectTypeMethods.push(method);
       methods[method] = typeChecks[name];
@@ -195,7 +195,7 @@
 
   });
 
-  extend(object, false, false, {
+  extend(object, false, true, {
 
     'isObject': function(obj) {
       return isPlainObject(obj);
diff --git a/lib/range.js b/lib/range.js
index d7aeb581f..81d1f3457 100644
--- a/lib/range.js
+++ b/lib/range.js
@@ -87,7 +87,7 @@
     return this.isValid() ? this.start + ".." + this.end : 'Invalid Range';
   };
 
-  extend(Range, true, false, {
+  extend(Range, true, true, {
 
     /***
      * @method isValid()
@@ -261,7 +261,7 @@
 
   });
 
-  extend(Range, true, false, {
+  extend(Range, true, true, {
 
      /***
      * @method step()
@@ -294,7 +294,7 @@
    * @extra If either [start] or [end] are null, they will default to the current date.
    ***/
   [number, string, date].forEach(function(klass) {
-     extend(klass, false, false, {
+     extend(klass, false, true, {
 
       'range': function(start, end) {
         if(klass.create) {
@@ -313,7 +313,7 @@
    *
    ***/
 
-  extend(number, true, false, {
+  extend(number, true, true, {
 
     /***
      * @method upto(<num>, [fn], [step] = 1)
@@ -357,7 +357,7 @@
 
   });
 
-  extend(number, true, false, {
+  extend(number, true, true, {
 
     /***
      * @method downto(<num>, [fn], [step] = 1)
diff --git a/lib/regexp.js b/lib/regexp.js
index f3ce60253..51ada04ed 100644
--- a/lib/regexp.js
+++ b/lib/regexp.js
@@ -12,7 +12,7 @@
    *
    ***/
 
-  extend(regexp, false, false, {
+  extend(regexp, false, true, {
 
    /***
     * @method RegExp.escape(<str> = '')
@@ -31,7 +31,7 @@
 
   });
 
-  extend(regexp, true, false, {
+  extend(regexp, true, true, {
 
    /***
     * @method getFlags()
diff --git a/lib/string.js b/lib/string.js
index 6715e364b..d655b84bc 100644
--- a/lib/string.js
+++ b/lib/string.js
@@ -187,7 +187,7 @@
   });
 
 
-  extend(string, true, false, {
+  extend(string, true, true, {
 
      /***
       * @method escapeRegExp()
@@ -889,7 +889,7 @@
 
   // Aliases
 
-  extend(string, true, false, {
+  extend(string, true, true, {
 
     /***
      * @method insert()
diff --git a/test/default.html b/test/default.html
index 717121c12..4aee88951 100644
--- a/test/default.html
+++ b/test/default.html
@@ -1,12 +1,13 @@
 <!DOCTYPE html>
 <html>
   <head>
-    <title>Sugar Full Package</title>
+    <title>Sugar Default Package</title>
     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
     <link rel="stylesheet" href="stylesheets/custom.css" type="text/css" />
     <link rel="stylesheet" href="stylesheets/tooltip.css" type="text/css" />
     <!-- setup -->
     <script type="text/javascript" src="javascripts/setup.js"></script>
+    <script type="text/javascript" src="javascripts/overrides.js"></script>
     <script type="text/javascript" src="../performance/javascripts/benchmark.js"></script>
     <!-- jquery -->
     <script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
diff --git a/test/full.html b/test/full.html
index 9fe1e47f3..d435cadd7 100644
--- a/test/full.html
+++ b/test/full.html
@@ -7,6 +7,7 @@
     <link rel="stylesheet" href="stylesheets/tooltip.css" type="text/css" />
     <!-- setup -->
     <script type="text/javascript" src="javascripts/setup.js"></script>
+    <script type="text/javascript" src="javascripts/overrides.js"></script>
     <script type="text/javascript" src="../performance/javascripts/benchmark.js"></script>
     <!-- jquery -->
     <script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
diff --git a/test/javascripts/overrides.js b/test/javascripts/overrides.js
new file mode 100644
index 000000000..d77df4a32
--- /dev/null
+++ b/test/javascripts/overrides.js
@@ -0,0 +1,59 @@
+
+var overridingFunction = function() {
+  return 'Something totally unexpected!';
+}
+
+Object.map      = overridingFunction;
+Object.each     = overridingFunction;
+Object.any      = overridingFunction;
+Object.sum      = overridingFunction;
+Object.isObject = overridingFunction;
+Object.isNumber = overridingFunction;
+Object.extend   = overridingFunction;
+
+Array.create            = overridingFunction;
+Array.prototype.findAll = overridingFunction;
+Array.prototype.all     = overridingFunction;
+Array.prototype.add     = overridingFunction;
+Array.prototype.groupBy = overridingFunction;
+
+String.extend              = overridingFunction;
+String.range               = overridingFunction;
+String.prototype.each      = overridingFunction;
+String.prototype.to        = overridingFunction;
+String.prototype.pad       = overridingFunction;
+String.prototype.insert    = overridingFunction;
+String.prototype.pluralize = overridingFunction;
+String.prototype.hankaku   = overridingFunction;
+
+Number.random                  = overridingFunction;
+Number.range                   = overridingFunction;
+Number.prototype.log           = overridingFunction;
+Number.prototype.ceil          = overridingFunction;
+Number.prototype.round         = overridingFunction;
+Number.prototype.floor         = overridingFunction;
+Number.prototype.abs           = overridingFunction;
+Number.prototype.upto          = overridingFunction;
+Number.prototype.downto        = overridingFunction;
+Number.prototype.secondsBefore = overridingFunction;
+Number.prototype.duration      = overridingFunction;
+
+RegExp.escape             = overridingFunction;
+RegExp.prototype.getFlags = overridingFunction;
+RegExp.prototype.setFlags = overridingFunction;
+
+Function.prototype.lazy     = overridingFunction;
+Function.prototype.throttle = overridingFunction;
+Function.prototype.debounce = overridingFunction;
+
+
+Date['ISO8601_DATE'] = 'none!';
+Date.create               = overridingFunction;
+Date.range                = overridingFunction;
+Date.prototype.set        = overridingFunction;
+Date.prototype.iso        = overridingFunction;
+Date.prototype.endOfDay   = overridingFunction;
+Date.prototype.long       = overridingFunction;
+Date.prototype.isToday    = overridingFunction;
+Date.prototype.addMinutes = overridingFunction;
+