The line comes from The Schuyler Sisters, a song from Lin-Manuel Miranda's Broadway musical Hamilton, which premiered in 2015. In the number, Angelica and Eliza Schuyler introduce themselves with full verses while their younger sister Peggy gets only the shouted aside And Peggy. Fans embraced the imbalance, turning Peggy into a beloved underdog and the line into a running joke. It spread through TikTok edits, reaction videos and stage-door memes as shorthand for being left out.