Alternatively, ‘Shutdown’ (with a capital), when refering to the 2015 grime track by Skepta.

Correct me if I am wrong, but I don’t think you would be able to do this as ctrl+c copies what is highlighted rather than the actual link.

If you wanted to do this and make it default, I believe you should be able to do so using userChrome.css. You won’t be able to change the text, but you can remove the old menu item.