Five Englishmen are in an Audi Quattro at an Irish border checkpoint.

The border officer stops them

“It is illegal to put Five people in a Quattro, Quattro means Four”

The driver retorts disbelievingly

“Quattro is just the name of the car, look at the papers: this car is
designed to carry five people”

The border officer starts getting a strop on

“You can’t pull that one on me, get out of the car, you have five people
in your car you are breaking the law”

The Englishman cries out

“You idiot! Call your senior over, I want to speak to someone with more
intelligence”

The border guard replies

(wait for it – see below)

“I’m sorry but Sgt Murphy is busy with two people in a Fiat Uno”