Catullus 16 or Carmen 16 is a poem by Gaius Valerius Catullus. The poem, written in a hendecasyllabic (11-syllable) meter, was considered to be so sexually explicit following its rediscovery in the following centuries that a full English translation was not published until the 20th century. The first line, Pēdīcābo ego vōs et irrumābō, sometimes used as a title, has been called "one of the filthiest expressions ever written in Latin—or in any other language".