April Fools Day for an IT Admin in my position wouldn't be practical. I have access to too much and it would undermine many of my professional relationships. One of the most important foundations of what I do is built upon trust, so if I were to pull a prank, it would damage that trust.
April Fools is pretty much the day that you take absolutely no interest in the operation of the world. You assume everything is a lie and sit back and enjoy all the machinations of pranksters as they try to get people's goats. It used to be that April Fools pranks would flow through social networks like a mighty river, but for the few years we've been using these systems, most people have developed a natural resistance to what April Fools day delivers. It's fun for people who have much more lighthearted jobs, but not for me.