You're walking along the street and you come to the realisation that you're heading in the wrong direction. But you're British; so you can't just turn around and go the way that you need to without looking like a fool. This is when your phone comes in handy. You'll get it out, have a look at it or fake a phone call and THEN change direction like you have to meet someone. As a nation, we're pretty weird but it makes sense.
