Twitter is known for having many weird and wonderful trending topics, but nothing could prepare us for the deluge of 80s nostalgia engulfed the social networking site.
The reason? Well it turns out that Optimus Prime, the 80s most fearsome and iconic robot, is trending.
Prime, lest we forget, was the ultimate goodie in Transformers, back when it was a kickass cartoon series rather than a sexist, mediocre film franchise. His battles with Megatron and the Decepticons kept a generation of kids on tenterhooks, and his death in the original Transformers movie is a defining moment in many people's childhoods.
At first it wasn't clear quite why Prime was trending (although, to be honest, you don't really need a reason to celebrate such a legend). Some disrespectful trolls even suggested he's been snared in the Hollywood sexual harassment scandal.
Eventually the true reason became clear: Optimus Prime is in fact the name of the horse that finished in first place in the first race at Worcester Racecourse today (November 14).
Take a look at the reaction to the trend on Twitter below