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About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket © 2025 Google LLC It's YouTube's birthday week and we're celebrating by rewatching the videos that kickstarted careers, launched viral trends, and inspired iconic pop culture moments. What does it mean? My boss told me to have a good day, so... It's YouTube's birthday week and we're celebrating by rewatching the videos that kickstarted careers, launched viral trends, and inspired iconic pop culture moments.