They started exploding all over the country. In London first, pushed to breaking point by poor tube etiquette and the unstoppable rise of novelty cafés.
It soon spread though, as everything does, and within a week the explosions had reached Liverpool. By April the population of the mainland United Kingdom was down to seven, and a handful of survivors were livetweeting its imminent arrival on Jura.
People couldn’t understand why heads kept bursting open like microwaved grapes, but that wasn’t about to stop it happening.
It made a lot of them very angry. In retrospect, that was their first mistake.