I like people watching at the bar.
I like to people watch as well. It is the act of observing people without their knowledge.
It sounds kind of creepy when you put it that way. haha.
Hah, true. It can involve picking up on idiosyncrasies to guess another person's story.
I find myself doing that often.
We can find clues in body language, expressions, clothing and activities. Sometimes I will follow someone if they are very interesting.
As long as you don't follow them into their house you're fine.
No only in public places. Eavesdropping can be part of the activity but it is not required.