Engineer was so sick of office pranks, he 'wiped' his antagonist's disk

A disgruntled engineer, known only as "Joe" in an Australian tech company, lashed out at his office prankster tormentor with a cleverly disguised prank of his own. Joe had endured a barrage of practical jokes in the messaging lab where he worked, from boxes of confetti to hand cream on phone earpieces, all orchestrated by a colleague named "TF".

However, TF's act reached a new low when he began startling Joe by roaring in his ear. Determined to even the scales, Joe spent his final week in the role crafting a harmless prank. He wrote a harmless-looking program that mimicked MS-DOS formatting a disk, complete with flashing disk activity light. Joe cunningly added this to autoexec.bat so it would run each time the computer booted, but programmed it to terminate after a month.

Months later, Joe was relieved to learn that TF had a panicked phone call, saying Joe was a "bloody genius" as TF's computer mysteriously formatted itself. By then, Joe had moved on from the company.