Rickrolling began as an internet bait-and-switch prank in the late 2000s, when misleading links promised one thing and instead played Rick Astley's 1987 hit Never Gonna Give You Up. The joke spread through forums, video sites and social media, helped by its cheerful sound and the singer's earnest performance. It became a shared online ritual, appearing in April Fools jokes, livestreams and surprise appearances, and it endures because the reveal is harmless, instantly recognisable and easy to understand even for people who missed the original trend.