Probably originated during the days of witch hunting when Christians made up stories to raise hate of witches.
witches traditionally have a spot that is immune to pain and feeling. .. They used to look for it by sticking needles in all over the place. .. An early firm of acupuncture lol ... it would also I guess be cold cur to this. .. the saying may have started from this but I'm only guessing
Hmmmm. Like it is blowing harder outside than a fat chick trying to make a impression on a first date?
it doesn't make sense when said like that, but, saying it's colder than a witches *** in a brass bra does. lmao :)