You obviously spend a lot of time with your aunt for this to be an issue.
I see that you are diagnosed AS. Does she know? Is she open minded about it? Is she willing to be taught some strategies?
Until I understood that my son has AS, I used to think he was just getting smart with me when he was actually not understanding exactly what I meant.
Now I know:Not to use loud or screeching tones. He won't hear the content, just the horrible noise I'm making. I speak to him calmly no matter what the situation is.
Not to be so verbose with him. The only out come will be that he shuts down and doesn't hear anything but babble.
Ask him to carry out chores in precise speech. Eg. I once asked him to "bring the towels in off the line." He went out and came in with only the items which had "towel" in their name. If I'm washing towels, I usually chuck in tea towels, hand towels, face washers, bath mats etc. He wasn't being smart, he was thinking literally."Bring everything in off the line." would have achieved the desired result.
Don't talk to him when I know very well that he can't respond or concentrate. Eg. He's in melt down mode, he's engrossed in a particular intense interest, has pushed himself and done something he doesn't usually do and needs time alone to reflect, etc.
I hope this was helpful. Good luck!
Thank you very much. I will share that will her.