I would give examples to be sure the other person understands, it wouldn't be a short summary though:
"Asperger's Syndrome has many sides. For one, there are the emotions.
It's like being mostly emotionally dead on the outside but having a living rich inside full of emotions. Do not call me cold or I will be deeply hurt, even if I won't express it properly.
And then there is your social life:
It is usually quite limited. I am not a person who recharges batteries by doing social things, I recharge them by spending some time alone. This doesn't exclude the need to deal with humans though, even when you have Asperger's you usually would not want to be 100% isolated from society (otherwise I wouldn't even communicate on this forum ) and be left alone all by yourself.
And my perception of the world differs:
I will not pick up on social cues, I might not look you in the eyes and I won't always comment what you say because I usually don't know when the right time is to, but that doesn't mean I don't listen to you.
I also have certain quirks that you might not understand:
I will relax myself by rocking forth and back or by tapping with my foot, I will rotate a pen with my fingers or things alike. I need to do so and sometimes I am not even aware I am doing so, please don't feel annoyed by them.
I will react different to touches, noises, certain tastes, bright light or things alike, my senses are more sensitive, I will perceive things which you maybe don't perceive, I have an eye for details, I hear silent sounds, I feel every touch, I feel my clothes, I might dislike the consistency of certain foods, I will dislike the feeling of certain materials and the feeling of certain clothes and if there is too much input, I might be inable to respond because I would be overstrained, I would "flee" or become "angry" (I doubt they would understand it in another way of explaining it).
I do not like changes and it takes me a long time to get used to them, so please, don't force a change upon me.
And I have an obsession with a certain topic:
I will spend lots of time with that topic, most of my spare-time, if not all of it. Please let me know, if I am talking way too much about it but you are not interested or not interested anymore, I can hardly know how you feel in a conversation because I mainly focus on what is being said.
I am different because I am neurologically different, but do not expect everybody with Asperger's Syndrome to be the same. It is part of the autism spectrum and just like the spectrum of colours, there are many shades of one colour."
_________________
Diagnosed with Aspergers.
BSP-errors are awesome.