Hilary Clinton, is touring live cattle export yards in the Senator's chauffeur driven car.
Suddenly a cow jumps out into the road; they hit it full on and the car comes to a stop.
Hilary in her usual jaunty manner, says to the chauffeur "You get out and check - you were driving"
The chauffeur gets out, checks and reports that the animal is dead. 
"You were driving, go and tell  the farmer " says Hilary, "I can't afford to be blamed for anything" 
The chauffeur walks up the drive to the farmhouse and returns five hours later totally plastered, his hair ruffled and with a big grin on his face.
"My god, what happened to you?" asks Sarah.
The chauffeur replies; "When I got there, the farmer opened his best bottle of single malt whiskey. The wife gave me a slap up meal and the daughter made love to me. "
"What on earth did you say?" asks Hilary.
"I knocked on the door and when it answered, I said to them I'm Hilary Clinton’s chauffeur and I've just killed the cow."