The 'Commit Sudoku' meme is a popular internet slang term used as a humorous substitute for 'Commit Seppuku,' the Japanese ritual suicide by disembowelment. The joke originated in the early 2010s on imageboards like 4chan, where users intentionally confused the logic puzzle 'Sudoku' with the historical act of 'Seppuku' for comedic effect. It is primarily used in gaming and anime communities to express mock-shame or dramatic overreaction after a minor failure, such as losing a match or making an embarrassing social blunder. The humor stems from the absurdity of threatening a deadly ritual while actually referring to a grid-based number game, making it a staple of internet irony.