Yes, I am out of my mind and I was just telling you what has helped me personally.
If you are already very nervous about this and you are even the slightest bit interested, perhaps a first step would be to go to an improv show and see it in person.
Going back to your original questions, have you considered telling the person that "I'm fine and it is possible that I may have seemed _____." By doing this, you acknowledge that the person may have assumed incorrectly without being antagonistic.
>Going back to your original questions, have you considered telling the person that "I'm fine and it is possible that I may have seemed _____."
Quite a few times, actually.
"Sorry, I'm actually okay, I just have resting 'bored' face/voice". They chuckle, we chat for a few minutes and one can observe their take of the situation changing completely as it dawns on them: "Oh, this is literally just how this guy talks".
You know the character Eeyore from Winnie the Pooh? Without sounding that drastically morose and actually being sad, it's sort of like that. Even when he's happy his voice just sounds slow, lethargic and uninterested.
So as it happens, I often have people talk to me for about two seconds, immediately jump to the "Cheer up!" routine, we talk more and it becomes evident the person slowly starts to 'get it'. It's not that I shut people out or refuse to engage in conversations, because my answers more often than not match up point for point with what we're talking about. I just have a very lethargic sounding voice coupled with answers that are sometimes more brief than a person is anticipating-which results in the oft-incorrect assumption that I'm annoyed with them.
Are you out of your mind??
But good suggestion (but also, are you actually out of your mind? I'm already fidgeting just imagining myself trying to do this)