To post a misleading link with a subject that promises to be exciting or interesting, e.g. "World of Starcraft in-game footage!" or "Paris Hilton blows Busta Rhymes' dick" but actually turns out to be the video for Rick Astley's debut single, "Never Gonna Give You Up". A variant on the [duckroll]. Allegedly hilarious.
> ...so instead of getting to beat off to footage of Ann Coulter getting raped by hyenas, I got rickrolled. What a day!