The ‘end of the world is nigh’ brigade are no strangers to the streets of the UK's cities.
Sometimes you might even think they have a point.
But one bearded protester against the evils of modern life has put his own spin upon the forthcoming end of days.
One Mary O'Brien shared images of the man on Facebook with two signs . One reads the usual: "The end of the world is coming unexpectedly", while the other adds: "Please stop sexual activity immediately."
Mary said: "Anyone else see this mad man outside Oxford Circus Station yesterday? I said I would stop having sex if he could spell 'immediately' - needless to say, thanks to his illiteracy, I'm still banging sex."
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Some people found the messages hilarious, if a little confusing.
Ian Forknall quipped: "Will stopping sexual activity prevent the end of the world or is he just worried that we'll all be caught without any clothes on and get chilly?"
