1 definition by Catu

To send someone a link to 80s pop star Rick Astley's "Never Gonna Give You Up" video, making them believe that they're gonna see something completely different. The meme originated in 4chan's /v/ (videogame) board, when the official "Grand Theft Auto: San Andreas" trailer was coming out on the game's website but couldn't be watched due to heavy traffic. Playing a prank on everyone who was reading, an anonymous 4chaner said that the trailer was on YouTube and posted a link to Astley's song. Since then, the Rick Roll has been made countless times, not only on 4chan but on the whole of the Internet.
Matt: You gotta check out this new band, it's awesome! Look, here's the video.

Rick Astley: Never gonna give you up, never gonna let you down...

Jake: Arrrgh man, you just Rick Rolled me again!
by Catu February 7, 2008
Get the Rick Roll mug.