I didn't just fall off the turnip truck

I didn't just fall off the turnip truck

       Here's  a link you may enjoy about this expression:  http://askville.amazon.com/fall-turnip-truck/AnswerViewer.do?requestId=6709616

            Here's a couple more links on the same subject:

                        http://answers.yahoo.com/question/index?qid=20120216093024AAMt8vX

                        http://www.wordwizard.com/phpbb3/viewtopic.php?f=7&t=20881

And there are many more links on this subject, too.