Retarculous was originally coined by To Catch a Predator decoy, Emily Bicks. It is a conjunction of 'Retarded' and 'Ridiculous.' It is used to describe something that is extremely dumb, stupid, etc.
by Briggs Bennigan January 12, 2019
Both retarded and ridiculous
by squid September 26, 2003
by epistocratles December 16, 2010
by madden March 13, 2005