Do you know any games where someone resigned in a winning/drawn position?
Here's one to start it off:
en.lichess.org/mYN2xksyThe one that I remember was the rematch between Garry Kasparov and Deeper Blue of game 2. Garry Kasparov resigned in what he thought was a lost position. However after much analysis, it was proven that he could have drawn game 2 if he had played a specific set of moves.
I think when he found out about this, it was unsettling and he ultimately lost game 6 from the exhausting series of games 3, 4, and 5 which were all hard fought draws if I remember correctly.
I usually tell my opponents that when they agreed to play this game was a blunder.
I have a good one :
fr.lichess.org/3aEoodte/black#118White resign in a drawn endgame.
My opponent (Lichess Master) tried to humiliate me for not resigning. Guess what happened to him.
en.lichess.org/ucj2QmqkQP2xNever resign folks, especially when they try to embarrass you for not doing it.