Across developed countries, higher growth rates are actually associated with cleaner environments, not dirtier ones.

"I shall see to it that there are dirtier ones."

There is no law against sending socks through the mail, even dirty ones.

"The funniest jokes are, let's face it, usually the dirty ones," he says.

But the dirty ones in the suitcases needed washing.

Servants here take away dirty ones, we never have t'do no wash.

The cleaner industries are therefore paying for the dirtier ones.

"But they don't want you to do that in Washington," he said, making the last three syllables sound like dirty ones.

You move with the clean guys and you go with the dirty ones just as easy.

Just be certain that you don't feed us the dirty ones.