We’ve shown you how to add automatically generated text in Microsoft Word, but they changed the text in recent versions of Word from “Quick Brown Fox” to something else. Here’s how to get it back.

The original method was simple enough—you just type =rand(x,y), or =lorem(x,y) to add random text or the lorem ipsum text. To access the Quick Brown Fox text, you can use =rand.old(x,y) instead.

Automatically Generate and Insert Filler Text in Word 2010 [Technet]