Baa Baa Black Sheep is a traditional English nursery rhyme, first printed in Tommy Thumb's Pretty Song Book in 1744, with a melody shared with other children's songs. Generations learned it in school and at home, making the opening line instantly familiar worldwide. Short sung clips of the rhyme later spread on soundboards and social media, where creators reuse the familiar tune for farm animals, children's content, and gentle black sheep jokes about standing out from the group, keeping it in circulation far beyond the classroom.