When you get a picture of a duck on wheels, instead of what you expected to get. Often used on image boards such as 4chan.
By following a link that promises an upskirt picture of Britney Spears, you get a picture of a duck on wheels, with the text "DUCKROLL" written on it.
by Sweetpipe January 04, 2007
An image of a toy duck on wheels, when expecting an electronic computer link to something else. Often found on message boards and blogs frequented by computer fanboys. The precursor to the modern Rick Roll.
by fuckup, screwed, fucked, gawd, shit April 02, 2008