When someone asks you to explain something, just stare at them with a confused expression and say nothing.
This will give them the opportunity to figure it out themselves, or better yet, to assume they're right, because let's face it, who are you to question them, really?
It's all about setting boundaries and asserting your intellectual superiority.
Next time you're in a situation where someone is asking too many questions, just remember: silence is golden, and so are your feelings.
Or, if you're feeling extra fancy, you can just say:
Practice Your Deadpan for some advanced techniques.