(vulgar, colloquial, derogatory) A jerk; a mean or rude person. / (vulgar, colloquial) The glans penis. / (vulgar, colloquial, derogatory) A stupid or useless person.

plural of dickhead

(derogatory, slang, vulgar) rude, inconsiderate / (derogatory, slang, vulgar) foolish, incompetent

(informal, vulgar) Incivility and stupidity.

(slang, vulgar) In a dickheaded manner.