Do Germans have a sense of humour?

Yes but not like the British or the Americans

My 3 years in Germany I would laugh at many Things and get strange looks from My Girlfriend and her Parents i never saw them Laugh

They are from people who fight strong. 

Of course. Why should they have not a sense of humour? Only because the British government invented this lie during WW2 for propaganda purposes?

We do have a sense of humor but its very dark... "What did one Jew say to the other"...   you get the idea. 

They have to have nowadays with millions of Arab Muslim rapefugees and Roma gypsies swarming over their open borders

Probably all nations have a sense of humour but it is different in different countries. German humour is not the same as ours ( I’m putting UK and USA together , we generally laugh at the same stuff), but no doubt they find it funny

Japanese humour is really odd mixing the extremes of childish and cruelty.

No

That's why they lost the war

No—like most Europeans—they are too serious.

Nein, schwinehundt.

I think some of them probably do hun.

yeah they loved allo allo