You do not know what cold is until you've hit Forty Below Zero!!  Here are some fun things to do when it's that cold....or colder:
Take a hot cup of coffee outside and throw it into the air.  None of it will hit the ground!  No, it does NOT freeze.  It turns into a cloud of ice fog.  The temperature difference is so great the water molecules explode into their smallest components.  If you do it under a street light it looks really cool.
Take some Mercury (the metal) and put it in a little bowl.  It turns into a solid, looks just like a coin.  Because it conducts heat so rapidly it quickly melts when you bring it back inside.
Put some light weight motor oil like 5W-30 and pour it into a small bowl.  (NOT your wife's Tupperware.)  Once outside a while it will turn into a very thick gel.  This is why we plug our cars in to headbolt outlets in the winter.  Oil in this condition does very little to protect your engine.
          Stay inside and catch cabin fever.  After a few weeks, the Shining starts to look like a pretty tame movie.