Can't offer an outright answer, but Rudolph Herzog, Dead Funny: Telling Jokes in Hitler's Germany (New York: Melville House, 2012) may be worth a look

I can offer a People's Court sentence against a catholic priest. He was accused of various traitorous statements, but what the ruling concentrated on was a joke he made. The joke was that a German soldier was dying and wished to see those he was dying for one last time. Thus, people took pictures of Göring and Hitler and put them to his left and right side. To which the wounded said, "Now I'm dying like Jesus Christ".

The priest Müller maintained that it was not a joke, but that it was supposed to show the soldier's sacrifice. The court however said that the 'natural' interpretation was that the soldier died in between two criminals, like Jesus did.

According to judge (and President of the VGH) Dr. Roland Freisler, Müller abused his position as priest for a 'dangerous attack on our trust into our Führer', making him a traitor against People, Führer and Reich and thus 'forever without honour. Such an assassination on our war moral can - so that similar aspiring traitors may be discouraged - not be punished with a different sentence than death.

I took this from Helmut Ortner's Der Hinrichter. Roland Freisler - Mörder im Dienste Hitlers.

Edit: He is on Wikipedia, though the English article is very short, sadly. The German one goes more deeply into his life as a priest and him being supervised by the Gestapo from early on. This may suggest that the joke was merely used to be able to deal with him and that the sentencing would have looked different with a "politically dependable" person!