… when you leave the room? When you’re not there to correct them? Or to explain what you actually meant to say? Or that this was not the point?
Yet, it’s exactly what they heard and what they made out of what they heard. If you want them to say it differently, then you’ll need to give them the words to do so. Use a clear structure that helps them see your point. Use metaphors and analogies they can relate to so they understand exactly what you mean. And use words they can easily memorize in simple language that have a meaning in their minds (as opposed to your mind).
You’ll never know what’s in their minds and there’s never going to be a guarantee that they understand it the way you intended it to, but you can always try harder to empathize.