Like many commenters, this post brings back memories of similar experiences...<p>My experience with being silly on school computers was mainly in middle school (age 14) where friends and I would find more inventive ways to wreak havoc on the network. One of the favourite tricks was to hack open the command line (using accessibility options in XP) and remote shutdown other student&#x27;s machines towards the end of a lesson before they&#x27;d saved their work... rather cruel to think back to it now. Another more daring guy sent a string of offensive messages to the principal on a LAN-chat type application that caused pop-ups on the receiver&#x27;s screen. Come to think of it, there were so many 3rd-party administrative &#x27;tools&#x27; that could be run trivially without root access on XP, such as drive-encryptors (rendering machines essentially useless) that it was easy to perform a whole manner of tricks.<p>Personally, I was only called into the deputy&#x27;s office once, regarding a server-wide DOOM game installation. They confiscated my memory stick due to it holding the DOOM installation files. However, I somehow managed to get it back the next day without them checking it; thankfully they didn&#x27;t, because there were so many 3rd-party executables and &#x27;network guides&#x27; on there it would&#x27;ve been far worse. I can relate to the stress the author felt in that sense, because going home that night knowing they had my memory stick was one of the most gut-wrenching feelings of my teenage years.<p>Thankfully, all that was required of me was a meeting with a sysadmin trying to explain why I had filled an obscure part of the server&#x27;s shared area with DOOM and COD sprites...