You can't do this in Microsoft Word 2011, but there is a work around.
Return your document to normal so nothing is upside down.
- Go to File > Print
- At the bottom of the Print window, click the PDF button, and save your document as a PDF.
- Once you have saved a copy, open the new PDF file inside Preview.
- Now, from inside Preview, go to File > Print
- If you see a Show Details button, click it to show all available options.
- Choose Layout from the print options pop-up menu (the pop-up menu within a separator bar, which should currently have 'Preview' selected).
- Select the “Reverse page orientation” checkbox.
Now, when you print, the document will print upside down.
Let us know if you need further explanation.