Ouch, it's obvious you're a Canadian!!
Here in Holland @ -10C we say:Brutal - the dogs get a very VERY short walk.
And: time for "de Elfstedentocht" (national ice-skating-event on natural ice between 11 northern cities, rarely occurs, once every 10 years orso).

Never mind any lower temperatures..

Oh hang on, I get it..

Your niece's father's sister was as hamster and your late aunts' brother smelled of elderberries..

( Now you try to blame me on saying anything.. )