Hang on, what is that on David Cameron's top lip?

After the president distracted American journalists with a dazzling tanned suit, the British prime minister followed, um, suit this afternoon by appearing with a small mark on his top lip, and thus completely distracting the nation.

In what will surely be a proud day for Ed Miliband, everyone on social media was judging Mr Cameron by his appearance rather than the the substance of what was actually a rather important press conference about raising the UK terror threat level from 'substantial' to 'severe'.

The real mystery here though is what the hell was that thing on his top lip? And did he do it himself?

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