Yeah, been there, done that.
It was worst during school... I could never pay attention, as the lessons almost always were about things I didnt care about. So I'd sit there and space out or stim somehow, and... yeah, that caused issues.
Or there was PE class (we just called it Gym Class). Sports were confusing, overwhelming, and I also simply didnt care. They also would have meant too much interaction with other students, most of whom I didnt like. Me being exceedingly stubborn and generally fiery, I just outright refused to do a bloody thing when it came to sports. Heck, I remember one time when they were playing football (American football, that is), and of course I'm stuck on a team despite not doing a bloody thing, and the stupid ball lands near me, aaaaaaaand.... I simply kicked it in a random direction as far as I could, because I'd been getting more than a little frustrated with their attempts to get me to do that crap.
Eventually this led to me being placed in a side group: when everyone else was doing their stupid sports, I'd just walk around the track or something. Or on Tuesdays and Thursdays, I and a few others would go by bus to a nearby driving range, and hit golf balls. This led to the odd situation where on those days, I'd carry around a big metal golf club the ENTIRE TIME (as I never went to my locker). Incidentally, I never got bullied on Tuesdays and Thursdays.
And then much later on, well.... employment. Uuuuuuugh. Tended to be the same issues: Couldnt focus, stimmed alot, absolutely did not want to be there, and sure as heck couldnt handle long shifts. Even just a four hour shift was seriously stretching it. The only job I ever had that involved longer shifts I was able to do was working at a bank, operating a check-sorting machine, which is a huge complicated machine that's supposed to sort checks but spends most of it's time chewing them up, spraying them around the room, or coming up with an endless variety of ways to screw up. Loopy thing kept me on my toes and mentally engaged (even if I wanted to beat it with a vacuum cleaner sometimes) so I was able to deal with longer shifts. But that job was a temp thing, one year and it was over no matter what, and getting a job doing that at another bank was impossible (very, very few bank locations actually have a check sorter, as one pair of sorters handles checks for a huuuuuuuge number of connected banks). After that? Hoboy. One failed mess after another. My stepfather in particular was always yelling at me. To everyone around me, I just seemed lazy, or uncaring, as I just kept losing one job after another. Mostly, I was just miserable and lost at most any job. Eventually the autism diagnosis came around, and all of that (including the jobs themselves) instantly stopped, as everyone finally understood.
Well, MOSTLY stopped. I do of course have to be constantly on edge when out in public. Cant be freaking weird around others, can I? Well, it's not weird to me, but it sure seems to be to everyone else. Bah. I get really tired of having to be careful about that, so I just dont go out much.