Had a similar experience at the YMCA yesterday. Took the girls upstairs to play on th eindoor maze/jungle gym and was wearing my gray, lined PK (its been below zero the past 2 days). A little girl saw me walk in and I could just tell she was not sure what to make of it. She turned to her Mom and said, that man is wearing a dress. Why? Then she came over and asked me why I was wearing a skirt? I told her it was a kilt and she asked me why I wore it. I said because I liked to. Her mom then explained that while they were not seen often in the US, they were more prevalent in other parts of the world. She then just looked at me while trying to come to grips with the whole concept. I winked at her and said "Kind of wierd, huh?"! This seemed to help her categorize it a bit. She then went to play.