Yes, some stims can be socially acceptable. NTs don't just sit or stand stock still like statues. That is very emotionless and expressionless (and NTs are meant to be the ones with more natural emotion expression, remember!) When people are waiting, they kind of tap their finger on a surface, or tap their foot gently or something. I've seen lots of people do that. And when people are speaking to eachother, I often see them have their hands together and are moving their fingers, or gently rubbing their fingers across the other hand, etc.
These are all stims of some kind. They're not, like, spasticated sort of stims. But they're still a kind of stim people use. Dancing to music can be a stim, and I know lots of people who jig to music when at home.
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Female