The 'Busty Aunt Cass' meme features a photoshopped screencap of Aunt Cass from the 2014 Disney film Big Hero 6. While the character in the film is known for her supportive and energetic personality, this specific image was edited by a Reddit user in late 2020 to give her a more provocative appearance. The image went viral on platforms like Reddit and Twitter in early 2021, often paired with captions about being distracted or the 'bonk' meme culture. Despite its origin as a fan edit, it has become a staple of internet humor used to represent situations where someone is overwhelmed or surprisingly captivated by a mundane interaction.