Seconding what Kiseki said, and playing off what Callista said, I'd take my mom out and people-watch. I'd take advantage of suddenly having the ability to learn that way, and make the most of it, while also making my mom happy and behaving in a way that she can register as affectionate. It would make her really happy not to feel alone, and I'd learn as much as I could. I'd have a notebook in hand all day, and I might email a friend to see if it felt different. Toward the end of my NT day, after the people-watching, I'd engage with the things that interest me now to see how it felt different.
Then, for the benefit of everyone here, I'd post my experiences.
Afterward, I'd have the benefit of a day of accelerated learning to give my social skills a nice kick in the rear. Yee-haw!
I'd be especially interested to know what happened to the way I think. I suspect I'd use the same vocabulary (though as an NT I would have developed a different one, as Callista said, you didn't say "NT with a history of being NT"), but differently. I'd enjoy being able to be asymmetrical-- oh, you touched my right leg? No need to touch my left, it's okay!
And I bet it would be really neat for transitions and focus to be easier, but it would be scary to suddenly perceive the world totally differently. It would be like a different place, but I bet I would think of it as a different person. It might be nice to have a day where I didn't need to pace, but I love pacing and derive great benefit from it, and a day isn't enough time to develop an alternative.
I would love to be able to stop stimming and touching things. And who knows? As an NT, I might not need to pace at all to do the same things!
I would be fascinated to know whether my preferences changed at all, and whether I reacted to emotional crises differently. (I often give friends a shoulder to cry on, but I view that as a type of solution, to be considered immediately as a possible course of action and taken if it yields the greatest benefit for the lowest cost. If I viewed it in the way typical of women, I think it would be very interesting.)
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I'm using a non-verbal right now. I wish you could see it. --dyingofpoetry
NOT A DOCTOR