Sonny handed the toll taker the dollar bill and waited for his change.

But the toll taker was fumbling with his change; the dumb son of a bitch actually dropped it.

And so they exchanged; the toll taker at the barrier kept the goose, and the peasant carried away the fowl.

Thanks in part to the contracts, investors have viewed the midstream operators as toll takers insulated from the volatility of energy prices.