We're not used to sub zero temps in the UK- we're not Scandinavian, after all! Whilst our Norwegian friends get all excited at minus 26 degrees C, our British homes are not designed for freezing our t..ts off. These deadly-looking icicles on the window outside are testament in fact to how badly our houses are designed- God help us if the Ice Age cometh! I remove these "weapons" with a swot of a broom as they could hurt my hound (and visitors, I suppose).
Photo copyright SvD.