LOL... that is hilarious. 

Some of the evil things we did to store computers. I remember a buddy of mine had shown me once, how to crash an NT based system in 2 seconds. 

He deleted one of the boot files, i think it was NTDETECT or something. The OS freaked out and rebooted. it was stuck in a bootloop. 

He would write these crazy batch files to do some odd and crazy things, like hooking explorer.exe on launch and killing it, pressing the windows key would launch a windows explorer window open bomb, etc...