It’s like a ball of cotton wool, with little legs!
Twitter is marking 10 years since the hashtag was first used on the social media site by celebrating some of the most memorable uses of the digital symbol.
Former Google and Uber engineer Chris Messina first used the symbol as a way of tagging or categorising a tweet on August 23, 2007, when he suggested the symbol could be used to create group messages.
It was announced last month that popular video service Vine is to be closed down by its owner Twitter due to falling profits and Vine artists leaving for other platforms such as YouTube. Vine has been a great source of GIFs, and tonnes of entertaining, weird and downright silly videos have looped out on it. A sad farewell, Vine. Featured above is resident superstar Jay Versace.