I'm the first to admit that I'm highly intolerant but I absolutely detest people who whistle in the supermarket (for example) and think of it than nothing more than noise pollution.
To me it's unnecessary and tuneless crap and I don't see why people feel the need to do it and why people should have to listen to it.
I know men probably do it out of some sort of nervous tick or something but it drives me crazy when I'm trying to do the food shopping and some bastard is whistling though every aisle.
(and breathe)