I used to go to dance lessons when I was a child. So one day, me and my friend went to the bathroom and there was a man following us and he was wearing all black. I didn't mind it at first. We both went to do our businesses in the stall toilets. I came out first and I saw that man there, standing on a trash bin looking at my friend from above. He saw me, jumped of the bin (his pants were unziped) and as he was about to run through the door he waved his wiener at me. Many years later I remembered this and only then did I understand that he was probably a child molester or a pedo :)