Overcrowding compounded by bad weather forcing you into even closer proximity indoors; you poor little lambs don't have any 'personal space'.
Good for founding an Empire though; add congenital syphilis, crap food, too much gin, public school buggery and a desperate desire to GTFO of Tunbridge Wells, and you have a recipe for carnage, ideally in someone else's country which you're in the process of nicking.
It's a wonder the whole Internet didn't explode like a carelessly-steered Zeppelin. It may yet do so.
Its all a commie plot to turn us all into poofs by putting Estrogenin the water supply.
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