Scotty Doesn't Know originates from the 2004 cult classic comedy EuroTrip, featuring a catchy pop-punk song performed by a band led by a surprise cameo from Matt Damon. The scene depicts a graduation party where the protagonist, Scotty, remains blissfully unaware that his girlfriend is cheating on him right in front of his eyes. The song’s upbeat lyrics and the visual of the high-energy performance became an internet sensation, evolving into a meme used to mock someone's extreme ignorance of a situation that is obvious to everyone else. It serves as the ultimate punchline for irony, betrayal, or just general obliviousness in modern digital culture.