On the devious nature of the oil industry

On the devious nature of the oil industry

You just can't trust anybody these days:

"I'm just off to the BP garage to fill the car up with petrol"

"You do realise they water it down, don't you?"

"They do? Waaait...what with? Everybody knows water and petrol don't mix."

"Err... paraffin."

"The devious buggers."