For a final project presented which was ostensibly a limited auto-translation application, I made an application which just popped up an alert, "program unable to run due to security"
Got an A!
The whole class was playing networked DOOM about 10 minutes later.
I thought I was going to get suspended or expelled, but instead the teacher in charge of IT came to me and said "I know you did it, if you show me how you did it you wont get in trouble."
The look of disappointment on his face when he saw how easy it was... I'll never forget it. I wonder how much the school paid for that 'security' :)
I wonder how common this is. I've seen it happen at my school - when you have a VNC server on every machine with a 3-character password (three guesses what that is...), the local admin password on every machine is school, and the domain admin password is a single dictionary word, bad things are going to happen.