Gyatt emerged as playful internet slang in the early 2020s and spread rapidly through TikTok, Twitch clips and short-form reaction videos, where its stretched pronunciation became part of the joke. The word is used as an exaggerated exclamation of surprise or admiration, often in response to something eye-catching, and its over-the-top delivery made it easy to reuse across unrelated videos. As the phrase entered everyday online humour, the sound became a shorthand reaction, letting creators signal disbelief instantly without needing extra explanation.