Dumb Polish Joke?

This is off topic but I just had such a belly laugh that I thought a lot of people would enjoy it.This is a true story by the way.
It seems that the whole Irish police force had been searching all over Ireland for the worst driver in Ireland. All they knew was that he was from Poland and that his address was constantly changing. Every time he was stopped for another traffic violation he had a different address so they were never able to catch up with him. They knew his name which was Kierowca Koncesja but his address was different every time.
One fine day someone who knew the Polish language pointed out that kieowca koncesja translated means DRIVERS LICENCE.
Oh yeah every time a policeman stopped "him" they thought this was his name. Mystery solved there were a lot of Poles with Drivers Licence as their name. Go on laugh. I did.