The present work analyzes the vocabulary used by Rio de Janeiro based comedy writer Luís Carlos Martins Pena. It begins with an inquiry of the meanings behind the genres used by the author, looking for the goals of comedy. The comediography used and reused vocabularies and wits that were frequent in his context to achieve his own reformer ends. In his work, there is a deliberate use of words from the political vocabulary, out of his original meaning, serving as a reason for laugh. The ridicule that Martins Pena shows, achieves not only the laughters, but the amendments of costumes.