Cold enogh to freeze the balls on a brass monkey

great rationale given except that the original phrase was cold enogh to freeze the balls ON a brass monkey.Hope this clears up all the scientific confusion .

I know this is trite, but a favorite expression in my youth was "Colder than a witch's tit." We also had a song: Cool as an iceberg floatin' in a pool; / Cool as the tip of an Eskimo's tool; / Cool as an ice cube floatin' in a glass; / Cool as the ring around a polar bear's ass! (SS: if this gets printed twice I apologize.)