There's a great Tyler Durden quote in Fight Club about this.<p>Narrator : Tyler, you are by far the most interesting single-serving friend I've ever met... see I have this thing: everything on a plane is single-serving...<p>Tyler Durden : Oh I get it, it's very clever.<p>Narrator : Thank you.<p>Tyler Durden : How's that working out for you?<p>Narrator : What?<p>Tyler Durden : Being clever.<p>Narrator : Great.<p>Tyler Durden : Keep it up then... Right up.