If you haven't had the opportunity to play a minotaur, it's a lot like being drunk. You "hear" yourself speaking as if you were the best speaker in the world. It's the rest of the room that has the challenge of understanding you. If you could hear your own "accent" or impediment, you'd have a better chance of understanding someone else with the same accent. But in this case, you can imagine that minotaur ears are not capable of picking up many subtleties about pronunciation even as their mouths are not capable of producing them. And so they don't have an easy time understanding one another, either.