You take a feather from an Eagle which you must pluck only by climbing down the side of as mountain to it’s nest. After having said feather in hand use razor to cut the point. Buy a small jar of Mont Blanc ink (only the best will do.) Voila, you now have the finest writing instrument good for signing the Declaration of Independence.
I don’t think it’s a good idea for anyone to climb down Ass Mountain. Particularly with a razor blade in one hand and a bottle of ink in the other. You could fall and end up as a streak on the bottom.