This question made me think of a paragraph in Noriyuki Nakayama’s The Tresure Chest Enigma. On page 41-42 in an chapter titled The Art of Resignation the author wrote:
There is story of about Kita [Fumiko] when she was about 13 or 14, when she would have been two stones short of professional strength.
One day she played a game with a leading amateur player, who was nicknamed Devil Shibata. Kita placed two stones and was having a hard time of it, but she fought hard and pulled off an upset victory. When she got home, her mother was waiting impatiently as usual in front of the go board. She immediately played through the game, but her mother lost her temper.
“You should have resigned such a terrible game, but you played on and won it. You have been extremely rude to your opponent, Mr. Shibata. Why didn’t you resign instead of this move here? […] You little dunce. You don’t even know that you should resign such a horrible game. Instead you come home and boast about it.”
Another telling paragraph:
Another name for go is ‘shudan’, meaning ‘talking with the hands’. One may not utter a word, but each and every stone played relates the feeling of the players. If you translate the shudan of a player who won’t resign a 100-point loss into English, he is saying: “You are such an imbecile that I can easily catch up 100 points.”
It is hard to imagine greater rudeness in a go player.