"What the dog doin" is a phrase that originated from a viral Vine video uploaded in 2014. The video features four people reaching into a small tin of mints, followed by a dogs paw reaching in as well, resulting in one man asking, "What the dog doin?". The video went viral in the years following its release, seeing a significant increase in popularity in 2021. The phrase has since become a meme and is often used humorously on social media platforms like TikTok and Twitter. The phrase is not related to any specific action or behavior of dogs in general.