I am putting in fairly awkward rhymes to more closely match the original song, it's harder thatn rhyming well I think!
We have to Go, Arne, Go!

In Flam in Sogn og Fjordane
Two brothers Arne and Oystein Tokvam
Lived a life of tedious boredom
Quietly counting their small fortune

chorus
'We have to go, Arne, go!'
Said Oystein, 'There's the loo, my stripper.'
and after quite a bit of time,
'I think they've skipped off with our kipper!
Where's our dough, Arne? Oh!'

Now one day Oystein says to Arne
It's been weeks since we went shopping
And I think we're going balmy
With just the two of us for talking

chorus

need I continue?