The 'You Don't Say?' meme features a black-and-white contour drawing of actor Nicolas Cage's wide-eyed, maniacal expression from the 1988 film Vampire's Kiss. It became a staple of the 'Rage Comics' era on platforms like Reddit and 4chan around 2011. The image is used as a sarcastic response to someone making a statement that is incredibly obvious or redundant. It perfectly captures the 'no duh' sentiment, using Cage's over-the-top performance to mock the speaker's lack of insight. Decades later, it remains one of the most recognizable reaction images for highlighting the painfully obvious.