The 'Source? I Made It Up' meme stems from a viral parody video of Metal Gear Rising: Revengeance by YouTuber Max0r. In the scene, the character Raiden asks Senator Armstrong for evidence to support his wild claims, to which Armstrong aggressively responds, 'My source is that I made it the f**k up!' This template is widely used across social media to satirize people who present opinions as facts or to celebrate the absurdity of being confidently incorrect. It captures the chaotic energy of internet debates where factual accuracy is often sidelined for dramatic effect.