An equation familiar to anyone who's sat through a few old episodes of Tom and Jerry. Women + Mice = localised uproar. It's a sexist old TV trope, of course, but it played out for real in England in 1875, when a mouse dashed suddenly on to a work table in a south London factory. Into the general commotion which followed, a gallant young man stepped forward and seized the rodent. For a glorious moment, he was the saviour of the women who'd scattered. It didn't last. The mouse slipped out of his grasp, ran up his sleeve and scurried out again at the open neck of his shirt. In his surprise, his mouth was agape. In its surprise, the mouse dashed in. In his continued surprise, the man swallowed. "That a mouse can exist for a considerable time without much air has long been a popular belief and was unfortunately proved to be a fact in the present instance," noted the Manchester Evening News, "for the mouse began to tear and bite inside the man's throat and chest, and the result was that the unfortunate fellow died after a little time in horrible agony.