Index: wp-includes/functions-formatting.php
===================================================================
--- wp-includes/functions-formatting.php	(revision 2433)
+++ wp-includes/functions-formatting.php	(working copy)
@@ -16,8 +16,8 @@
 			$curl = str_replace('``', '“', $curl);
 
 			// This is a hack, look at this more later. It works pretty well though.
-			$cockney = array("'tain't","'twere","'twas","'tis","'twill","'til","'bout","'nuff","'round");
-			$cockneyreplace = array("’tain’t","’twere","’twas","’tis","’twill","’til","’bout","’nuff","’round");
+			$cockney = array("'tain't","'twere","'twas","'tis","'twill","'til","'bout","'nuff","'round","'cause");
+			$cockneyreplace = array("’tain’t","’twere","’twas","’tis","’twill","’til","’bout","’nuff","’round","’cause");
 			$curl = str_replace($cockney, $cockneyreplace, $curl);
 
 			$curl = preg_replace("/'s/", '’s', $curl);