diff --git a/activesupport/lib/active_support/core_ext/array/random_access.rb b/activesupport/lib/active_support/core_ext/array/random_access.rb
new file mode 100644
index 0000000000..b7ee00742a
--- /dev/null
+++ b/activesupport/lib/active_support/core_ext/array/random_access.rb
@@ -0,0 +1,12 @@
+module ActiveSupport #:nodoc:
+  module CoreExtensions #:nodoc:
+    module Array #:nodoc:
+      module RandomAccess
+        # Return a random element from the array.
+        def rand
+          self[Kernel.rand(length)]
+        end
+      end
+    end
+  end
+end