Very funny. 'Though, I wish I knew what they were singing.

The BEST translation I have found was from someone from Eastern Europe (so it is no quite readable) is as follows:

1. I drive Skoda 100 to camp here on Orawa
So I hurry, take a risk - go through Morawa
The monster lives there, comes out of the bog
Eats mostly Prague citizen, its name is Jozin

Chorus: Jozin from the bog creeps through swamp
Jozin from the bog closes to the village
Jozin from the bog edges its teeth
Jozin from the bog bites, strangles
To defend Jozin from the bog, who could imagine, only works a plane with manure

2. I was driving through the village on road to Vizowice
The village mayor greeted me, said to me during drinking Sliwowica
'The one who will bring Jozin dead or alive
gets my daughter and a half of National Agrarian Farm

Chorus: Jozin from bogs is already in one piece white,
Jozin from bogs is escaping from bogs,
Jozin from bogs got to stone,
Jozin from bogs, here is already his end!
I laid Jozin my hands on, I am already holding him,
Good every money, I will sell him to the ZOO.

3. I said: 'give me a plane and powder, mayor,
I'll bring you Jozin, I see no trouble about that',
Mayor helped me, in the morning I went up in the sky
The powder from the plane prettily fell on Jozin.