Martian invader about to destroy Dublin

From Joke5.co.uk

A Martian lands to plunder, pillage and burn in Dublin.

He goes up to the owner of the first house he sees and says, “I’m a Martian just arrived from the other side of the galaxy. We’re here to destroy your civilisation, pillage and burn. What do you think about that?”

The owner replies, “I don’t have an opinion. I’m a chartered accountant."