This question - What did Madara mean by "showing our guts"? - is a question asking about the definition of an english phrase.
Sure, it was found in a manga, but apart from that, it's not really to do with Anime & Manga - just like questions about Japanese that are not relevant to the plot (e.g. https://anime.stackexchange.com/questions/4111/what-is-the-japanese-symbol-on-the-wall-in-episode-83-of-hunter-x-hunter)
I don't see why questions about English would not fall under the same rules?