Do the Norwegians tell similar jokes about the Swedes/Danes? (like the Dutch and Belgians).That equal banter somehow a little bit better than the standard English/Irish joke.
OK here's one (insert your own nationalities or whatever):-
(Not very intelligent) bloke turns up to work on a building site,puts his wellies on.
Foreman: 'Hey, (not very intelligent bloke),you've got your wellies on the wrong feet'
(Not very intelligent bloke) 'oh,right'
Same scene occurs for several successive mornings.
Finally
Foreman 'Look,why don't you write L on the left boot and R on the right one?'
(Not very intelligent bloke)does so
(Not very intelligent bloke) 'Hey,that's amazing.Now I know why my wife's knickers have C and A on them'
