Gee, Rae thinks, it's pretty warm out there (minus six). The tanks need dumping! Why don't I just thaw out the dump valves. There! All thawed! Waitaminute, nothing's coming out!
Yes, my full black tank is actually a solid block of ice. As a friend would write--:headdesk:
"Life's but a walking shadow, a poor player that struts and frets his hour upon the stage and then is heard no more. It is a tale told by an idiot, full of sound and fury, signifying nothing."