We already know that if the UK votes to leave, then no British firm will be able to sell goods to Europe, British visitors will be barred from there, we'll all lose our holiday homes there, and no UK football club will be able to sign European players; but even worse consequences might follow. Almost certainly, without the protection of EU environmental regulation, British rivers will turn to blood, and a multitude of frogs will emerge from them. With no winds blowing across the Channel the dust here will probably turn into lice, and swarms of flies will descend.
With no Common Agricultural Policy, our livestock will all become diseased, and this will cause boils to break out in people. Without the ability to send our weather across to Europe, thunder and hail will stay in Britain, and swarms of locusts will feed on the flattened crops.
If the UK leaves, the light will be gone from our lives and a thick darkness will envelop the land. It is highly likely that the firstborn of every family will die. While people might be ambivalent about this happening to the Queen, it would be a tragedy for everyone else.
We have to get the message across that the only way to avert these disasters is to remain within the EU.