Witches Tit

Why do people say, "It's colder than a witches tit!"?  It just sounds wrong for one and secondly, why is a witches tit cold?  Can't you say, "It's hotter than a witches tit"?  I looked up where that saying came from and how it started and this is what I found..

~ "The simple explanation is that "colder than a witch's tit" is just a vivid metaphor, like "hotter than the hinges of hell." Since a witch is in league with Satan, presumably she has no maternal feelings. Thus the medium by which she would suckle a child is, well, cold as a witch's tit.  But there's some history behind this wisecrack.

A witch's tit (or witch's teat, to use the older spelling) supposedly left a marking that witch hunters and courts would look for on the body of an accused person. Supposedly, witches would suckle their familiars, and sometimes the Devil himself, from this "unholy" body part. To find these marks, as well as insensitive spots on the skin called devil's marks--caused by the Devil's claws or teeth--the suspects were stripped, shaven, then closely examined for any blemishes, moles, or even scars that could be labeled as diabolical. To find marks invisible to the eye, the examiner would
poke the victim inch by inch with a blunt needle (called a bodkin) until they found a spot that didn't feel pain or bled. Discovery of these marks or spots--one supposes they would be considered cold since they were a sign of communion with the Devil--would be "proof" of the person's dealings with Scratch, so they would be shown in full court before the execution." ~

A little interesting, don't ya think?  I was standing in my bedroom last night with the husband and made a comment about how warm it was upstairs seeing that when we were just downstairs in our family room it was freezing.  I said it was "hotter than a witches tit" and he corrected me saying, "I believe the correct saying is 'colder than a witches tit' and went on saying that witches tits are cold and not warm/hot.  I laughed. I asked how he knew that a witches tit was cold or warm...he said nothing.