This clip is not a joke.

It's a Belgian farmer who tries to explain to his Polish workers that there are still bombs on his field. And whenever he hits one with his tractor the Polish workers have to make a run for it.

The farmland was part of the battlefield (Ypres) during the Great War (1914-1918) and there are still thousands of mines and bombs on his land.

The language the farmer speaks is supposed to be English but ehum.... well... judge for yourselves.

http://www.youtube.com/watch?v=YWD3GqLOTgk