The joke rests on Musaylima al-Kaththab, a seventh century figure from Arabia remembered as a false prophet, whose name became a lasting Arabic byword for a compulsive liar. Calling someone Musaylima therefore goes further than a simple accusation of lying. Short Arabic voice notes like this one spread through group chats, gaming clips and comedy edits, where a familiar historical insult can be dropped in two seconds. It stays popular because the reference is widely understood across Arabic speaking audiences and works without context.