The only thing you can convincingly change the letters of Huxley to, should you know a boy called Huxley who compulsively writes his own name on everything. You can then insist on calling him Boxlex for the remainder of his life. Alternatively, steal the pencils, change the names, and then say "these aren't your pencils, they appear to belong to a boy called Boxlex. Since there are no Boxlex's here, I think I shall use them." Then, you can chew them for half an hour and give them back. I didn't actually do this, but I wish I had.