While I like to tell that story too (it was supposedly advertised in Sweden as "so funny it was banned in Norway"), it was not technically banned. It was not given a certificate, so it couldn't be shown in public cinemas, due to concern it might breach the blasphemy laws, at a point where Norway was still fairly religious.

It's also the last time that ever happened - the Heathen Society tried repeatedly to provoke the use of the blasphemy paragraph for many years until it was repealed, and kept failing. The paragraph had at that point not actually been invoked since Arnulf Øverland was acquitted in 1933 (after being charged following a speech titled "Christianity, the tenth plague" - "Kristendommen, den tiende landeplage").