Took me a minute to get it. It’s a stereogram (3d image hidden in a pattern – think “sailboat” from the movie “mallrats”). It’s kind of hard to explain how to do it, but here goes an attempt:
1. Look at it so it’s at eye-level and about 10 inches from your face.
2. Let your eyes relax so that you’re focusing on a point BEHIND the monitor
3. Try to adjust the distance of your focus so that the repeated words overlap eachother.

When you finally get it, what you’ll see is that the image becomes 3D. All of the text is in the background, with the exception of two white boxes that pop out towards you. The first reads “Stop wasting your time” and the other reads “get a life.”

If you aren’t familiar with the technique, it takes several minutes to do your first one, but if you’ve done them before you should get it within 30 seconds or so. Google stereogram to get some practice.