Limecat, also known as 'Limecat is not amused,' is one of the earliest and most recognizable cat memes from the early 2000s. The image features a somber-looking cat wearing a helmet carved out of a lime skin, originally surfacing on various Japanese message boards like 2channel before gaining massive popularity on LiveJournal and 4chan. The meme became the quintessential way for early netizens to express boredom, judgment, or general lack of amusement toward a thread or topic. Despite its age, Limecat remains a nostalgic symbol of the 'Classic Cat' era of internet culture, paving the way for future feline icons like Grumpy Cat.