When you're on youtube and see some old videos in the suggested videos column. You click on one, knowing that it's from 2007 you still watch it. Watching the video instantly makes you nostalgic about the time that video was released. Or some videos can make you feel like an idiot,thinking a stupid video was the funniest video ever.
Guy 1: "Hey go on youtube and look up Star Wars Kid"
Guy 2: "That's like 5 years old! It will bring back all these youtube memories"