Tubgirl is one of the internet's most infamous shock images, originating in the early 2000s as a frequent 'bait-and-switch' prank alongside sites like Goatse and Lemon Party. The image depicts a woman in a bathtub wearing a mask, creating a fountain of liquid that orbits back onto her face. While highly controversial and graphic, it remains a cornerstone of early internet culture, representing the 'Wild West' era of unmoderated forums and the emergence of gross-out humor. Today, it is mostly referenced nostalgically or used to describe the feeling of witnessing something truly unsettling online.