Carmen Possum is a popular 80-line macaronic poem written in a mix of Latin and English. Its author is unknown, but the poem's theme and language enable one to surmise that he or she was from the United States of America and was either a teacher or at least a student of Latin. The poem can be used as a pedagogical device for elementary Latin teaching. The language mix includes vocabulary, morphology (turnus) and grammar (trunkum longum). Carmen Possum is also an unpublished musical piece by Normand Lockwood.