diff --git a/activerecord/CHANGELOG b/activerecord/CHANGELOG
index fb78e6e539..e64e594ad2 100644
--- a/activerecord/CHANGELOG
+++ b/activerecord/CHANGELOG
@@ -1,5 +1,7 @@
 *SVN*
 
+* Add AssociationCollection#create! to be consistent with AssociationCollection#create when dealing with a foreign key that is a protected attribute [Cody Fauser]
+
 * Added counter optimization for AssociationCollection#any? so person.friends.any? won't actually load the full association if we have the count in a cheaper form [DHH]
 
 * Subclasses of an abstract class work with single-table inheritance.  #5704 [nick+rails@ag.arizona.edu, Ryan Davis, Jeremy Kemper]
diff --git a/activerecord/lib/active_record/associations/association_collection.rb b/activerecord/lib/active_record/associations/association_collection.rb
index 273cc64334..b8337fe4d9 100644
--- a/activerecord/lib/active_record/associations/association_collection.rb
+++ b/activerecord/lib/active_record/associations/association_collection.rb
@@ -86,14 +86,11 @@ module ActiveRecord
       end
 
       def create(attributes = {})
-        # Can't use Base.create since the foreign key may be a protected attribute.
-        if attributes.is_a?(Array)
-          attributes.collect { |attr| create(attr) }
-        else
-          record = build(attributes)
-          record.save unless @owner.new_record?
-          record
-        end
+        build_and_save_with(attributes, :save)        
+      end
+
+      def create!(attributes = {})
+        build_and_save_with(attributes, :save!)
       end
 
       # Returns the size of the collection by executing a SELECT COUNT(*) query if the collection hasn't been loaded and
@@ -202,6 +199,16 @@ module ActiveRecord
           @owner.class.read_inheritable_attribute(full_callback_name.to_sym) || []
         end
         
+        def build_and_save_with(attributes, method)
+          # Can't use Base.create since the foreign key may be a protected attribute.
+          if attributes.is_a?(Array)
+            attributes.collect { |attr| create(attr) }
+          else
+            record = build(attributes)
+            record.send(method) unless @owner.new_record?
+            record
+          end          
+        end
     end
   end
 end
diff --git a/activerecord/test/connections/native_mysql/connection.rb b/activerecord/test/connections/native_mysql/connection.rb
index 9a91a75cac..ff6bda51bb 100644
--- a/activerecord/test/connections/native_mysql/connection.rb
+++ b/activerecord/test/connections/native_mysql/connection.rb
@@ -4,6 +4,9 @@ require 'logger'
 
 ActiveRecord::Base.logger = Logger.new("debug.log")
 
+# GRANT ALL PRIVILEGES ON activerecord_unittest.* to 'rails'@'localhost';
+# GRANT ALL PRIVILEGES ON activerecord_unittest2.* to 'rails'@'localhost';
+
 ActiveRecord::Base.configurations = {
   'arunit' => {
     :adapter  => 'mysql',