We were discussing The American Dream in class when the Prof asked the one German kid if there was such thing as 'The German Dream'. He replied "We did, but nobody liked it"
From this story I gather that maybe this is what you think about all Germans?
I don't think that way buddy. It's a joke dude. I'm just telling you about the dream we had. We don't want to repeat it again.
Making light of the German atrocities during WW2 isn't funny. Millions of people were killed during the holocaust and many more on the battle lines. Such death is still very relevant and impactful to the ones who survived so they'd be upset to hear such jokes.