Talk:Boast Busters/@comment-10390252-20141002144437/@comment-25559529-20150827043749

I think Twilight giving Spike the mustache at the end of the episode was her way of a silent thank-you. Since it was Spike who, throughout the episode, insisted that Twilight use her magic in public, and he turned out to be right, Twilight was thanking him silently.