The last time I was whistled at, I was approaching 50 and the guys were in their twenties, driving past as I strode down the hill from the bus in a summer dress. I did glance at the car, thinking they were making fun, but they were smiling so I took it as a compliment and thanked my genes for good legs. I'd be sure they were being sarcastic now. I was whistled at a lot when I was younger and it embarassed me, especially if I was walking past the guys, it was better if they were in a car. I thought I didn't like it, but when the whistles became less and less frequent, I missed it.