The line comes from I Got You I Feel Good, the 1965 soul hit by James Brown known for its punchy horns and shouted vocal hooks. Short excerpts of Brown's singing have circulated for years in edits and reaction videos, where the stretched woahhh version became popular as a quick shorthand for confidence and relief. Its age is part of the appeal, pairing an instantly recognisable classic with modern short form humour, and it remains in use because the mood reads clearly even without the full song.