vulgar slang A humorous and exaggerated way of saying "ridiculous," applied especially to someone or something considered especially audacious, brazen, impertinent, or foolhardy. The term replaces "dic(k)" with "cock" because both are slang terms for the penis. It's yet another ricockulous plan from the government to solve a minor problem with an utterly convoluted solution. Dude that shirt is ricockulous! Where did you get it? The movie's story was ricockulous and the characters little more than paper cutouts, but the action scenes were incredible.