If I heard someone use "autism" as an insult, I'd immediately think they spent too much time on 4chan or looking at stale memes. I think it's rather stupid but I don't bother correcting them - they do it for the reaction.
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I'm sailing across Spectrum Sea, in my little boat.
The waters of the port were choppy. After I set off, there was a long, massive storm.
Years later, however, the sea calmed. I'm still on tranquil sea, but I'll never reach the Neurotypical Beach.