Downloading media (films, shows, games, music etc.) or software off websites for free where it is actually on sale. It is most commonly found off torrent sites such as Mininova. Although, they are found mostly of bittorrent sites, most of them are not aloud and deleted when they are found.the soon possibly defunct "The Pirate Bay" is one of the exceptions to this.
(I personally oppose piracy/illegal downloading but a lot of people surprisingly dont.)
You could get it legally, it will support the artist more than the evil mainstream record company!
Illegal downloading is (insert opinion here)
Ruler of Lake Titicaca. Rumored to have a bunghole that gets very angry if it does not receive toilet paper. Cornholio the Great is often seen walking around with his shirt over his head and his hands in the air, chanting songs about his power, and his bunghole.
"I am Cornholio! You do not want to face the wrath of my bunghole, for I need TP!"
Butthead: Shut up, Beavis! (uh huh huh huh)
Beavis: Um, okay. (heh heh heh heh).
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi