What is brrrrr-damn?

Term used to describe a degree of cold that is the absolute most cold of anything possible. Nothing could be any colder than brrrrr-damn. When you walk out your front door in the winter time and it is 3 degrees outside, burrrrr-damn! When you get into the shower before you realize your hot water heater is not working, brrrrr-damn! It doesn't get any colder than brrrrr-damn!