Trudi Marrapodi wrote:

As long as we're going off on a tangent, I'd love to see people stop:

--forgetting to turn them off or set them to vibrate at events like concerts

The crassest thing I experienced was a woman who called somebody on her
mobile during a piano recital. That's right, she was not called, she did
the calling (and finally left when everybody else tried to kill her with
looks).