Realized something I’ve done for years is stimming

I take the bus A LOT. From taking it everyday in elementary and high school, to now taking it a dozen times a week. I like my music, specially, stuff I can sing too. Obviously I don’t sing in public (I respect the peace of others) so when I’m on the bus I tend to lip sync to music + when I feel comfortable that no one is watching I also like to do “acting” if it’s a more musical theatre one.

Thinking about it today, it dawned on me that that’s probably a form of stimming for me as I tend to feel… too small??? When I don’t

I guess I just wanna put it out there to ask, do others do this? Also, what are funny things you didn’t realize were stims?