Sudoku is a puzzle game where you have to put numbers on a grid. I've never played, but I've watched other people play. First you get a Sudoku puzzle, then you get a pencil. Use the pencil to write numbers on the puzzle. Every once in a while, erase one of the numbers and then write a different number in it's place. After about fifteen minutes, crumple up the paper and throw it away. Then break your pencil. Sudoku is complicated, like adopting a baby or the second season of Lost. If you wear a funny Sudoku shirt, then people will think that you are really clever. They will think that you know how to complete the puzzles and they will think you are super smart. A funny Sudoku shirt will probably convince your boss to give you a raise. Sudoku is super hard. Shirts, if washed properly are super soft. Think about it. A soft funny Sudoku shirt is the yin to a hard Sudoku puzzle's yang. That's pretty frickin' zen, don't you think.
