I am looking for some relaxing, funny maths article that one can read when tired. For instance, I found Bouton's paper "Nim, a game with a complete mathematical theory" very funny. If you know something similar, like articles dealing with simple games that you can play with friends, or with a combinatorial theory that you can write down in a C program, or any other amusing aspect of mathematics that does not require a huge background and that you can read when you are very tired, but not too much tired to give it up, I would be grateful if you could share it!
Thank you, bye!