Rickrolling began online in 2007 as a bait and switch prank where a promising link secretly led to Rick Astley's music video. The joke spread from forums and early YouTube across social media, classrooms and live events, helped by Astley himself performing the song at major public appearances. Its humor relies on shared recognition rather than malice, so the same eight seconds still instantly signal that someone has been playfully fooled and remains a staple of internet prank culture today.