420chan was an anonymous imageboard founded on 20 April 2005 by freelance web developer Aubrey Cottle. According to its founder, its name was a portmanteau of 420, a slang word originating in cannabis culture but now applicable to drug culture more generally, and 4chan, another imageboard website. Discussion on the site was primarily focused around recreational drug use and wrestling, with other boards related to topics including humor and academia. As of 1 June 2022, 420chan's main URL, 420chan.org, has gone offline and has not reactivated, rendering the site inactive.