Cake Day is a term popularized by Reddit to signify the anniversary of the day a user joined the platform. Represented by a small blue or green cake icon next to the user's handle for 24 hours, it has become a cultural phenomenon where users are traditionally given a 'pass' to post content specifically asking for upvotes or celebrating their longevity on the site. The memes usually revolve around the desperation for karma, the excitement of finally reaching the anniversary, or the self-deprecating humor of spending another year on the internet. Over time, it has evolved into a meta-joke about internet validation and the specific traditions of the Reddit community, often used to jokingly demand attention on one's special digital day.