The name for the Cookie Clicker hack is "saysopensesame". To use this hack, you need to click on your bakerys name to open up the text box so you can modify it. In the pop-up box, you need to insert the word "saysopensesame" at the end of your name, all as one word, and then hit enter. Next, in the top left corner of your bakery, youll see a small dev box icon appear. You can now click on that to open up plenty of dev tools that will always be at your disposal. Its important to note that using this hack will not add any cookies to your total, but it will unlock the "Dev tools" cheat menu.