Rickrolling began in the mid 2000s as a bait and switch prank online, inspired by an earlier duckroll meme on 4chan. A link would promise a trailer, leak or download, but open Rick Astley's 1987 hit Never Gonna Give You Up instead. The joke exploded in 2007 and 2008 across forums, YouTube and even live events, turning the song into a permanent internet ritual. Astley later embraced it, and the clip still returns whenever a creator wants a familiar, harmless betrayal.