Mamma mia is a long established Italian expression of astonishment that entered global pop culture through everyday speech and entertainment. ABBA released a song titled Mamma Mia in 1975, and the stage musical of the same name premiered in 1999, followed by the 2008 film, helping the phrase reach new audiences worldwide. Online, the short audio form became a reusable reaction sound for edits, memes and streams, valued because the meaning is clear across languages and the theatrical delivery needs no explanation or setup.