釘 (kugi), one kanji, one of Japan's most powerful proverbs. 出る釘は打たれる (deru kugi wa utareru): "the nail that sticks out gets hammered down. " Stand out, and society will push you back in line. Six words that explain more about Japanese social dynamics than any textbook. The character 釘 (kugi) pairs metal (金) with 丁. In oracle bone inscriptions from over 3,000 years ago, 丁 was drawn as a tiny filled square: the head of a nail, seen from above.