"Baa Baa Black Sheep" is a traditional nursery rhyme that tells the story of a black sheep who provides wool for three bags. The rhyme is often recited to children and is known for its simple, repetitive structure, making it easy to remember and sing along. The origins of the rhyme date back to the 18th century, and it has been included in various children's literature. It is commonly associated with themes of sharing and generosity, as the sheep gives wool to the master, the dame, and the little boy who lives down the lane.