You reminded me of a time in high school when I worked for the local library. The librarian had a perverse habit of closing the windows in the back room during

You reminded me of a time in high school when I worked for the local library. The librarian had a perverse habit of closing the windows in the back room during the summer, making it unbearably hot. My mother, who worked there full-time as the Children's Librarian--the Librarian's direct subordinate--told me that during winter this woman would open up the windows and make everyone freeze. So while I worked on a program in FoxPro to automatically print out new catalog cards, I also wrote a small program in QuickBasic to print out (depending on the time of year) a message saying "OPEN THE WINDOW!" or "CLOSE THE WINDOW!" (the latter signed by "The Frozen Ghost") and then pause the computer for a good minute or so just to make sure somebody read it. For good measure, I made the AUTOEXEC.BAT file and my program read-only, and then deleted ATTRIB.EXE from the hard disk so that it would at least be somewhat annoying to remove. Years later I got a call from an IT tech who wanted to ask me some questions about DOS (he never specifically said why!) and I feigned ignorance. It felt good.