I think Boger's suggesting refrigerated water, not frozen water. I agree this is an awesome idea. I'll try it myself. My poor snake's been baking too.
If you use something frozen (water bottle or gel pack), just make sure to wrap it lightly so your snake doesn't directly contact it. Not that he'd likely try, but ?
Rudeness is the weak man's imitation of strength. Eric Hoffer(1902 - 1983)
“The greatness of a nation and its moral progress can be judged by the way its animals are treated.” ~ Gandhi