Double Decker.

I have started travelling on the bus to get to work and i always go to the top deck, why wouldn't you, better up there ain't it?

Anyway, i spotted an opportunity.

The tops of bus stops should carry advertising that of course, due to their position, would talk to the people on the top deck, and only people on the top deck.

And then i had another thought.

These adverts should be kept a secret, so that only people on the top deck get to benefit from seeing the messages, and they are also told not to talk about it, thus keeping it a secret from everyone else.

You then become part of a special club that only you and people on the top deck know about.

Shhhhhh, don't tell anyone.