Rickrolling began as an online bait and switch prank built around Rick Astley's 1987 song Never Gonna Give You Up, spreading widely from 2007 onward when unexpected links led straight to the music video. The very interesting button version applies that same trick to curiosity itself, presenting an irresistible button as the bait. It stays popular because the setup is instantly understood, the payoff is recognisable in seconds, and the joke works even when viewers suspect they are about to be tricked yet again.