Dirt bike

dirt bike, known as Dirt Bike in Windows Live Messenger, is a user account picture included in Windows XP and Windows Live Messenger. It depicts a dirt biker jumping in the air. While it is definitely a stock photo as it is known to appear on a book cover, it is unknown where it was taken, who took it or where it originates, thus no links have been found, meaning it would have been taken down before TinEye started indexing stock photo sites.