The sound comes from the Costco Guys, father and son creators A.J. and Big Justice, who went viral on TikTok in 2024 reviewing Costco food. Their boom meter rated items with big booms instead of stars, and five became the top score everyone quoted. Clips spread as a meme sound across TikTok, Reels and edits, with people applying the rating to meals, sports plays and everyday wins. It stays popular because the scoring is instantly understood and easy to reuse for any exaggerated approval.