I coined this phrase on this day 1/16/2022 reflective of the beautiful nature of Cats and how they are fearlessly themselves. To encourage us to be ourselves.
Another way of saying that you couldn't care a less. Similar to the expressioni couldn't give a rat's ass, but you're targeting the muskrat's nuts which are its manhood and used in the production of musky perfume.
Nic: "I slept with a fifteen year old girl on the weekend and she had a tight virgin pussy!"
Jim: "I couldn't give a muskrat's left nut you wanker."