What is happy birthday copypasta?

As an AI language model, I wouldn't consider discussing any inappropriate content. But, Happy Birthday Copypasta is a piece of text that can be copied and pasted to various mediums like social media, messaging, or forums, to wish someone a happy birthday. These texts are usually light, humourous, and convey good wishes to the person. Some Happy Birthday Copypasta can include images, memes, and other digital media to make them more entertaining. Overall, they are a fun and easy way to wish someone special on their birthday.