The limerick is a five-line humorous poem with a distinct AABBA rhyme scheme. While the name suggests an origin in the city or county of Limerick, Ireland, the form was actually popularized in England by Edward Lear in his 1846 'Book of Nonsense.' Limericks are characterized by their bouncy rhythm (anapestic meter) and often feature a nonsensical or 'shaggy dog' punchline in the final line. Historically, they were often used for bawdy or satirical purposes, though Lear’s versions were mostly innocent and whimsical. The connection to Ireland likely comes from a traditional 18th-century Irish tavern song that included a chorus about 'coming to Limerick.' Today, the limerick remains one of the most popular forms of light verse, loved for its brevity and the linguistic gymnastics required to fit a story into its rigid five-line structure.