420chan is an anonymous imageboard founded on 20 April 2005[3][4][note 1] by freelance web developer[5] Aubrey Cottle.[1] According to its founder, its name is a portmanteau of 420, a slang word originating in cannabis culture but now applicable to drug culture more generally, and 4chan, another imageboard website.[6] Discussion on the site is primarily focused around recreational drug use and wrestling, with other boards related to topics including humor and academia.[6]