Yeah is best known from Usher's 2004 single Yeah, featuring Lil Jon and Ludacris, which topped charts around the world and became a defining sound of mid-2000s crunk music. Lil Jon's shouted ad-libs gave the track its party energy, and the single word Yeah became one of the most sampled and quoted hooks of the era. As short clips spread through TikTok, YouTube edits and meme pages, the shout detached from the full song and became a standalone reaction for excitement, approval and celebration. It remains popular because it is instantly recognisable even without the rest of the track.