The shout comes from Kendrick Lamar's song 'TV Off,' released on his 2024 album GNX, where producer Mustard's signature tag is yelled at full volume. Kendrick performed the track during the Super Bowl LIX halftime show on February 9, 2025, and his stretched-out delivery of the name turned the tag into a viral moment overnight. Clips of the yell spread across TikTok and meme pages, where the elongated spelling 'MUSTAAAAAARD' became the joke itself, and the sound now lives on as a hype drop far beyond the original performance.