On Friday, Chinese president Xi Jinping spent the final day of his four-day visit in Manchester and spent some time at the City of Manchester Stadium. So Man City striker Sergio Aguero took a selfie with Xi and the PM.
People are pretty confused.
Others are just extremely disappointed.
Before long, people started commenting on what the odd picture might represent.
Such as the new "Hangover" movie.
It was suggested that David Cameron's eagerness to get into that photo might suggest that he's backing Manchester City.
Speaking of Cameron's face...
There's also a very simple answer for those of you wondering why Xi looks so unimpressed. He supports the other team in Manchester.
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Siraj Datoo is a political reporter for BuzzFeed News and is based in London.