I used to work in an office that looked across to houses in inner city Melbourne. A few times, one of the girls from across the road used to get changed with the curtains wide open, so I occasionally would look across & see her totally nude for extended periods of time. She had to know what she was doing...
A couple of times, as I walked out of the office & past her house, she walked out of her front gate at the exact time I happened to be there. I stayed as calm as I could