Similarly, when I get on a plane the first thing I do is put on my headphones. I don't often listen to anything though, most times I'm reading comic books. But

Similarly, when I get on a plane the first thing I do is put on my headphones. I don't often listen to anything though, most times I'm reading comic books. But the signal to the person sitting next to me is "don't bother me", and most times people understand it immediately.