People who make fun of anyone about anything are not being nice, so that pretty much covers it. As far as being unable to tie shoes, I think I was at least 10 or 12 before I did it. Surprisingly, I think I know what the problem was
... Everyone who tried to teach me, was doing so from in front of me facing me while demonstrating, so the shoes were toe-to-toe against mine. The result was that I was trying to tie them in reverse, which doesn't work! The one teaching must be beside the learner, facing the same direction. That's all it took for me. The same learning block happened to me with learning to ride a bicycle. Telling me to "balance" was useless. As soon as a friend (an engineer) drew me a diagram which basically demonstrated in pictorials; countersteering and inertia, I got on a bike and rode it. The moral of this story is that we in the autism community, often can't learn things the "conventional" way. Same goes for mathematics. I flunked miserably in trying to memorize such basics as (x) tables, adding and subtracting in columns with borrowing and carrying, or worse yet long division. But later (still while in school) for some reason, I learned by a different method which I can't explain. I just look at the numbers, and they fall into groups or sets, and there is the sum or other answer. I wish I could explain it better. Teachers hated that I couldn't "show my work", but the math was learned and without cheating.
Charles