Allahu Akbar is an Arabic phrase meaning God is the greatest, known as the Takbir in Islamic tradition, where it is used in prayer, calls to prayer and religious gatherings. Outside that context, recordings of the shouted phrase circulated widely on video platforms and soundboards as a meme sound, often detached from its religious meaning and used for dramatic or ironic effect. Its recognisability and intense delivery helped it persist as a reaction clip, even as many viewers know it primarily from internet edits rather than formal religious settings.