Today is Limerick Day, and what better place to celebrate this unofficial holiday than in Limerick, Ireland. The connection between the historic city and the humorous, five-line verse is unclear. Several theories have been purported, none of them definitive. But the city of Limerick has embraced its namesake poetry style and in recent years the Limerick Writers" Centre has hosted an annual competition called Bring Your Limericks to Limerick.