Someone forgot to sign off when using a computer in the computer lab, and by using google chrome you could change the desktop wallpaper. Some unknown person changed it and signed the computer off. The next time that kid used that computer he signed on and was immediately greeted by full on furry porn, with exposed nipples and ass in full view of everyone including the teacher.

The closest I personally got to messing with them tho was just me installing and playing Tony Hawks Underground 2 when I had the chance.