The rules are simple: You can add, subtract, or change one letter of the word posted above you. The result must be a real word (let's stick with English for simplicity).
You can reorder the letters in addition to adding, subtracting, or changing one letter.
Remember, if you think you're "stuck," you can always try making it plural by adding an "s" or simply going back a step to the previous word (and then someone else can take a different choice so we don't end up with the same dead-end word again).
First word: Couch