23. Crazy KeysWant to drive your friend crazy with his own keyboard? Visit the Regional and Language Settings under the Windows Control Panel for some fun. An arguably insane guy named August Dvorak created an alternate keyboard layout that — big surprise — never took off. But you can still access it and make normal typing impossible. Just go under the Languages tab, click Details, then Add, and you’ll find the option to completely remap the keyboard.
Looks like 25 reasons to get your butt kicked
21. Screen ScreamOur next prank comes courtesy of Microsoft, surprisingly enough. The programmers there released an office “Blue Screen of Death” simulator. Install the screensaver on an unsuspecting IT guy’s PC and see the feared symbol of system error pop up after a few minutes of inactivity.