I've been trying to teach a young relative to whistle this week and it got me thinking about whistling in general.
If you can whistle (as in whistle a tune, or with tune-like intention, as opposed to wolf-whistling or calling your sheepdog), do you actually whistle, and when do you do it?
I was passive-aggressively whistled at by a bloke heading for a lift I'd just entered a few weeks ago. I held the door for him but he made firm and consistent eye contact with me and while whistling a non-tune louder and louder as he approached the lift. It was very odd and slightly menacing 