I found this shirt on ThinkGeek.com. It is totally fitting for any IT person. Here is the description on their site:

Every ThinkGeek customer has at least one of these individuals in his or her existence. This is the person who, after asking you to fix the computer, provides you with a litany of every non-applicable quirk that's happened with the computer in the last two weeks, but insists that restarting the computer could not possibly fix the problem. And then starts into the list again. You're ready to bellow at this person, "The question was, 'Have you rebooted?' not 'Do you believe that rebooting will help your situation?'" Because, honestly, if this person knew anything about computers, he or she wouldn't be in this situation to begin with, and so his or her opinion on potential solutions is entirely irrelevant.

ThinkGeek is probably one of my absolute favorite sites, and I often find myself browsing away and chuckling at t-shirts and such that I've laughed at a hundred times before. When you work in IT, you always have those "special" end users that always seem to give you nothing but trouble, and looking at the IT related t-shirts on Think Geek I always find one that makes me think of each of them. Here are a few more of my favorites. Enjoy! And hey, chcke out their site at http://www.thinkgeek.com/. There's really something there for everyone!