I didn't infect anything ... but everyone screamed
The wife had people passing around .exe files at the school she taught at - the principle told them to stop it and everyone ignored him so I gave here a file called australia.exe that flipped the screen upside down. She forwarded it to everyone and the school went to pieces because everyone ran the thing and then panicked. They stopped passing around executables after that.
Biting the hand that feeds IT
