I don't mind about that.
I actually think it was pretty funny even if it is a reoccurring joke.
Maybe it's because I sympathize.
I have a family like this and I could swear they have this ability even in our non-magical world...
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It's a good thing they remember they need to worry about the beast. If only they could remember that they also need to HIDE FROM THE KING SINCE HE SHOULD KNOW WHO THEY ARE NOW!!!