What is the most stupid thing you ever done in chess?



post what the most stupid thing they
have done in chess is should I say
what the ultimate enormous stupid
thing I have done is (you gonna laugh when you hear it)!
🤣🤣🤣🤣🤣

Your opponent didn’t have the respect to remind you to press your clock? That’s a cheap win for your opponent.
Travelled halfway across the country to play in a tournament, stayed up all night playing cards, overslept, and missed the morning round.
I actually feel bad for you😢

I knew the King not castling was really bad - having it stuck in the middle. So when attacked, I refused to 'break rank' and use my King to take a piece back. I did that THREE times - lost THREE pieces (two Knights and a Rook, if I recall) in a single game and all three could have been easily taken by my King but it would not budge of its square. Why do you think I'm the donkey?
I've tried to block that game from my memory of stupidity. In truth, I suspect it's one of the most important to remember; seems things work out that way.