This is pure evil…Take a screenshot of the desktop, rotate the image 180 degrees. Set it as a wallpaper. Hide the desktop icons and the taskbar (or just kill explorer.exe). Reverse the whole desktop 180 degrees.
So your friend will have a desktop with ‘unclickable’ icons and ‘taskbar’ with an upside down mouse pointer. THIS is the evilest thing I can imagine… :p

in Funny, Technology