I have experienced the same, getting approached often when I walk around with a smile, which at some times got pointed out as weird. I mostly enjoy doing it though as people approach me often, and by expressing interest shared their life experiences within minutes of meeting.

Before I quit speaking with people for a long time I got super good at assuming how persons brains made connections, and what they are most likely connected to, so I spoke in concepts which I figured they are aware of, just by noticing their vocabulary, accents, and intonations.

I got told it seems like I know people (within minutes of meeting them :)

I also enjoy expressing when I do not know something or only something and figuring it out then.

Thank you for sharing!