One lady in a motel in Seaside Heights, New Jersey when I was like 10. I was in a pool and this woman was staring at me. I was going back up to our room after I saw her there. She stopped me and asked me what I thought about my parents. I told her a wholesome answer, something like even though they can be tough on me at times I love them very much. She told me her son "wasn't here right now" and she "missed him very much". She asked me for a hug which I gave her since I didn't know what to do. I went up to the room and told my mom. My mom came down with me back to the pool and my mom could immediately tell this woman was high out of her mind. The woman stared at me in the pool for a while longer and then said that her room was stinky and her and her husband were going to leave. She asked me to go into the room with her and my mom told her no. My mom said we would go back up to our room. The woman wanted another hug from me, which I gave her. After we walked away I never saw her again.
In 2nd grade there was some kind of puppet show (I think it was for D.A.R.E.? Was supposed to be teaching us something anyhow) and one of the ladies made her puppet flirt with me. I don't remember what she said and it couldn't have been too inappropriate because nobody did anything but I remember feeling deeply uncomfortable, but didn't really know what to do so I never said anything.
Told my mom and sister on a whim a year or two ago and they didn't take it seriously. Smiled and laughed a little and only stopped when it was clear I didn't think it was funny.
I was AMAB and still identifying as a boy then. I know the whole "but what if the genders were reversed" argument gets abused frequently but I still have to wonder if things would be different, both at the time and later when I said something, if I'd been a little girl and the puppeteer was some random man flirting with me.
I felt this same uncomfortable feeling so many times from adults as a child even up to being a teenager and i never understood why and could never tell my parents about it cause i couldn't explain it myself