But American oil firms are a different matter: as Exxon has shown, so long as you sit on colossal oil reserves, they will always be happy to do business.

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In other words, as long as you stay in that range, you are happy and take home some money at the end of the expiration cycle, in 32 calendar days in our example.

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That means you should stand there at the sink for as long as it takes to sing happy birthday twice.

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What would be really handy is if they have some parks in London where you can camp, because I'm a happy camper as long as it doesn't rain.

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