This is not an asked often but what if you want text to be upside down?  You can do this in Word but you will need to use the option called Word Art. 

1.  Click the Insert tab, Text Group and click Word Art to display the Styles available. 
2.  Select the style of your choosing and enter your text.
3.  Click on your text (Word Art) to select and navigate to the Format tab if you are not
     automatically moved to that tab.
4.  Click the down arrow by the Rotate Icon and select Flip Vertical to switch the text to 
     be upside down or use the other options available.